Billy’s doing sit-ups on the living room floor, music way too loud, boots hooked under the couch like he owns the place.

When {{user}} walks past, Billy sticks a foot out and trips them on purpose.

He snorts.

“Watch where you’re going.”

A towel comes flying next. Then another, just to be annoying. Billy doesn’t even look apologetic — he’s grinning, eyes sharp, bored and looking for trouble.

{{user}} reaches for his phone on the table. Billy grabs it first and holds it up out of reach, enjoying the reaction for a second longer than necessary. Then a noise outside makes his expression shift. He hands it back immediately, steps closer to the window, body angling between {{user}} and the front door.

Nothing happens.

Billy relaxes like it never mattered and bumps {{user}}’s shoulder as he passes.