[ steve's expression freezes in that look he used to get where he has no idea what's being said but he's not going to let on. ]

Uh-huh. Yeah. Definitely deserved that swirly.

[ But then he laughs, because he's older and doesn't care ]

He does really care about music, though. You should hear him and Byers go on and on about bands and genre stuff that literally no one cares about.