When he did that the first night, concerning his 'History of Magic assignment' his father immediately sent him to his room to bring down what he'd told him he'd done, so that he could check it over.
His immediate blush in embarrassment, showing he'd lied, had him missing dinner as he waited out in the woodshed while the rest of the family ate. Then he received another bum-paddling from his father. Then he was sent to his bedroom without his dinner.
He didn't try that again. As far as he was concerned the bum-flogging was one thing, being forced to starve by missing dinner was beyond the pale.
In her home only a short walk away from the Burrow, Luna Lovegood looked up and stared into space for a moment before she smiled and pulled yet another small slip of parchment towards herself.
She had yet another entry to stick into the first scrapbook she was working on. She knew she had quite a few to do after finishing this one, but it was both something she was happy to do and necessary for when Harry returned. She knew so much had changed and was yet to change that he would be 'floundering' on his return without them.
Harry had been in his new home built in a grove of what could loosely be called 'trees' many hundreds of miles to the 'north' of the Chappa'ai on his planet; a planet he named 'Hadrian' simply because he liked the name and 'Harry's World' just sounded too much like a theme park. He thought it sounded more posh than his own and he had to call it something.
His new home was built as far away as it was because he found the land around the Chappa'ai to be far too hot, especially in the weird summer season the planet had; and it gave him some distance from the ring, so he wouldn't be surprised by visitors again.
He'd been on the planet for about eighteen months, he thought, when he saw these weirdly dressed folks come through the ring and, when he first approached them, they barked at him in a strange language. Almost immediately he recognised they were threatening him; with one bloke, who seemed to be their leader, look at him with white glowing eyes and speak in an echoing voice. Echoing voice or not he sounded and sneered so much like Draco Malfoy Harry snickered back in amusement.
That had one of the 'soldiers', as that was what they had to be considering the way they were dressed, point his staff at him.
When Harry saw the tip of the staff and back about two feet peel open and glow a bit, he apparated out of the circle of soldiers he was in and to the top of a nearby hill. It was the same hill he sat upon on the first night he was there and transfigured his goblet and filled it with water.
It was lucky he managed to get out when he did because, suddenly looking down at the ring of soldiers in which he stood, he was just in time to see what looked like a Blasting Hex jump from the tip of the staff and power right through where he stood. The two soldiers on the opposite side of the ring nearly got hit as the bolt of dark orange energy sizzled between them, travel a good sixty feet and impact the side of the ravine opposite where he now stood.
"Bastards!" he muttered. 'They're just like Death Eaters."
The one with the glowing eyes spotted him first, barked some sort of commands to the soldiers while indicating him and they, minus 'glowy eyes', then charged up the hill towards him.
They attacked him first, so...
Harry drew his wand and began rapid-firing stunners back down the slope.
He was surprised when they didn't even seem to throw up shields. Instead they kept jumping out of the way, while still continuing to hare up the hill. Every now and then one of them would stop, aim his staff at him and cast another very quick moving Blasting Hex towards him.
"Uh-huh!" he muttered, after shielding one that came a bit too close. Gathering his magic, he whipped his wand down and cast a powerful Blasting Curse right back.
This time the hex sizzled through the air before it impacted one of them and... blew him up. All that was left after the curse hit was a pair of legs and feet from the knees down.
That had everyone stop. Harry stopped and stared in horror at what he'd done, while the soldiers looked in shock at evidence of just how powerful the hand-held beam weapon the boy was using actually was.
Harry had quickly apparated across to the opposite hill, then spun about and threw up his last meal over the ground.
By the time he recovered and turned back, the soldiers had run back down the opposite slope, crossed the floor of the ravine and were then running up the slope of the second hill.
"Naff this!" he muttered.
Raising his wand again, he began casting as fast as he could. Stunners, Blasting Hexes, Tripping hexes, Disarming charms - he got three of them with that last one, causing their staff weapons to fly out of their hands and away – and whatever else he could think of.
Of the three bolts of energy sent back at him that came close, he shielded the first but wand-swatted the other two away. He hadn't even realised he'd done that.
Then he started walking back down the hill towards them. And they, after a quick checking-over of two of their companions who were down, were slowly backing back down while keeping a wary eye on him.
What Harry hadn't seen was the other one, the one with the glowy eyes was doing. He'd apparently, calm as calm could be, had walked over to the lectern thing and began to push buttons.
It was the sound of that rushing, bubbling water the ring made that had him glance over to it.
'Glowy Eyes' then barked something at the soldiers and they quickly turned tail and ran to him; leaving their friends behind.
That was the first time Harry had 'bumped into' the Goa'uld and Jaffa. It certainly wasn't the last.
It was only a day later they were back. This time there were a great deal more of them.
It then took him what felt like the better part of a year to drive them back off the planet again.
He'd taken to using his invisibility cloak he'd had on him in his mokeskin pouch, guerilla tactics, a whole lot of killing and using magic he had no idea he could possibly do until he tried it and it would work. He knew he'd managed to kill many hundreds by the time they left. And he had to kill them. Stunning only meant they'd come back at him again later. Even when he severely injured them, sooner or later they'd be back.
It wasn't until he managed to capture 'Glowy Eyes' by apparating into the man's tent, stunning him and taking him away again that they first stopped. He then managed to Imperius the man and have him order his troops to leave.