A/n: Here's dragon combat. Idea by trystrike.
"So: idea." said Snotlout. Hiccup sighed internally, mentally steeling himself for what was about to follow. "Dragon wrestling."
"What?" Hiccup frowned. When Snotlout had randomly approached and told him he had a great idea that simply had to be shared, Hiccup had assumed it would be some stupid, dangerous idea; the type that generally ended in someone getting injured, or trapped on Outcast Island with no means of escape: a whole manner of ridiculous situations could arise. Not that this didn't have the potential for disaster...
"Hey!" Snotlout complained, "You didn't let me finish!" The interruption didn't much faze him though, as he instantly continued: "So, dragons love fighting each other, right? What if we made a sport out of it?"
"Why?" Hiccup asked, baffled. "They don't - dragons don't do that - why would we... what?" It was ridiculous - encouraging violence, pitting dragons against each other? What if one of them got injured?
Snotlout laughed. "It's such a good idea, you're completely speechless! I'll take that as a yes, then. Cool! The first match is tonight!" he said, not allowing Hiccup a word in edgeways. As soon as he'd finished, he rushed off, leaving a gobsmacked Hiccup to gape uselessly in confusion.
The first match, as it turned out, was Toothless against Stormfly. Hiccup was a bit surprised that Toothless had agreed to the idea, but apparently the dragon really enjoyed play fighting.
"Huh..." Hiccup said quietly, watching from his place by the side of the ring as the two dragons circled each other slowly. "What do you know..."
'Ready to go down?' Stormfly challenged, friendly smirk the only indication that the fight wasn't a real one.
'Huh. Unlikely.' Toothless scoffed. Hiccup frowned; he didn't want his friend to lose because he underestimated his opponent. Especially not since it was Toothless, of all dragons, who should know not to judge on appearances. He always had been a tad overconfident.
"Go Stormfly!" Astrid cheered over on the other side of the ring. "Take him down!"
'That's what I'm doing.' Stormfly assured. Then she jumped. Toothless was taken by surprise slightly, only just managing to rear back enough to avoid the sudden assault.
Next, Stormfly lunged forwards, pushing Toothless onto his back. Snotlout grinned at the sudden development, counting down the time Toothless had to get the nadder off himself, as per the rules.
'What was that about unlikely?' she asked casually as Toothless squirmed beneath her. Across the ring, Hiccup noticed Astrid smirking at him. Like dragon, like rider, it seemed.
'I said...' Toothless started, rearing his legs to send Stormfly back with a powerful shove, 'It was un...likely!'
Toothless succeeded in getting the nadder off him, quickly turning the tables as he landed on top of her. Snotlout began counting down again as Stormfly wriggled beneath Toothless's grasp. She managed to break free just as Toothless had, though the resulting shove didn't end with Toothless on his back again. The dragons returned to circling each other, tails swishing as they thought out their next attacks.
The two collided in the middle of the circle they were fighting in, each dragon trying to push the dragon over.
Eventually, the night fury's power proved too much for her, and the short match came to an end when Stormfly couldn't escape from Toothless in time. The Vikings and dragons observing the event exploded into excitable cheering and clapping, drowning out the quieter compliments and commiserations both riders were giving their dragons.
'You showed him you were stronger than he thought,' Astrid pointed out to her still upset dragon. 'He won't be challenging you again in a hurry!' Stormfly nodded in realisation, her confident smirk returning.
'I was always going to win,' Toothless told Hiccup with false bravado, 'I'm the alpha.'
'Whatever you say, bud...' Hiccup remained unconvinced. "Good match!" he called over to Astrid.
"So: was that a good idea, or was it a good idea?" Snotlout came over and asked.
"It was good," Hiccup admitted. "So long as both dragons want to have a go, and they keep it clean, there should be no problems with making it a regular thing."
"Yeah!" Snotlout shouted. "Dragon Combat is a thing!"
"Dragon Combat?" Hiccup asked with a slight chuckle, "I thought it was Dragon Wrestling?"
"Nah, this is much cooler." Snotlout said, walking over to share the good news with the twins.