It is a personal headcanon of mine that Wilbur is a floaty boi because he's a phantom, as in an actual ghosty boi, hence he does not take fall damage, unless it is for comedy.
Thanks to Awsomaniatica on ff dot net for the idea!

Wilbur was in a Mood.

Not a bad mood. A Mischievous Mood.

And when Wilbur was in a Mischievous Mood, there was sure to be chaos.

Wilbur floated, invisible, above Tommy's base. No one was safe. Not even his little brother. Wilbur glided down and quietly opened the gate to Tommy's goat pen, and Tommy's goats, being the little escape artists they were, promptly scattered.

"Oh, what the fuck!" Tommy screeched when one of the goats snuck up behind him and promptly sent the avian soaring a good 8 meters into the sky. "How did you get out?!" Tommy glided down, altering his trajectory toward his house, scrambling to find the leads to get the goats back in their pen.

Well, he wouldn't find them just yet, because Wilbur had already moved them.

And with that bit of mischief done, Wilbur moved along to 'playing' with someone else.

Jack was his next target. Wilbur slipped a hand into his pouch, feeling the container of water within.

Jack was in his home, the lava pool that led deep underground happily bubbling inside. Wilbur floated around behind him, and silently pulled out the container of water. He carefully uncapped it and lightning-quick dumped about a third of it over Jack's head.

"What the hell!" Jack yelped, whipping around to look for his attacker.

But Wilbur had already dove into the floor and was hiding down below, giggling manicially.

Wilbur slipped away from the confused blazeborne to go find another target.

He paused above Ranboo's little cave, looking down at the enderian who was shuffling through chests, putting resources away.

Wilbur grinned, and floated lower, just barely peeking through the ceiling. He dumped the rest one Ranboo, but as soon as a little bit hit their head, Ranboo screeched and teleported away, leaving the rest of the water from the container to splash on the floor.

Wilbur shrugged, and dropped out of the ceiling, returning to visibility when his feet hit the floor.

He tucked his hands into his pockets, happily strolling out of Ranboo's cave into the dusk, smiling like the cat that got the cream.

"What are you doing?" Someone asked, causing Wilbur to yelp.

"Dad! Hi!" Wilbur squeaked out.

Philza's arms were crossed, and he gave Wilbur a look that was a cross between disappointment and amusement.

"Well, you see. I wanted to chat to Ranboo!" Wilbur spluttered out. "But when I arrived, I must have scared him!"

Wilbur nodded quickly. "He teleported away! I don't know where he went!" He tried to smile.

"Uh-huh." Philza slowly nodded. "You sure 'bout that, mate?"

The two stood in silence for a good few seconds before Wilbur deflated, "Okay. I'm in a mood and I dumped water on him…" He mumbled, fiddling with the bottom hem of his sweater.

Phil simply looked at his son.

"I won't do it again…" Wilbur mumbled, breaking the awkward silence.

Phil sighed. " Look, Wilbur. I know nothing can stop you when you get in a mood, so next time… come let me know,"

"Okay…" Wilbur mumbled, looking down at his shoes. "I know. I know…"

"Because you know I have the supplies to help satisfy the mood." Phil finished.

Wilbur looked up, his mind whirling with ideas again. His cheeky grin spread across his face. "Oh I will hold you to that, Phil." The Phantom giggled.

Wilbur phased into the floor, plans whirling through his mind, as he thought about all the supplies that Phil would have in his possession to pull off the little pranks that Wilbur so loved.

thoughts? leave me a comment! :D