Back around 1999-2000, my circle of band friends included a drummer in another band. We all kinda rotated in an out of the same venues. This guy's signature trick was to remove his shirt as soon as he hit the stage. Temperature didn't matter. It was just his thing. Nobody seemed to care.
At one point, he filled in for me when I couldn't make a couple gigs. The band I was in at the time weren't happy at all with the shirtless performance. The "naked guy" in the back of the stage clashed with the suited "Blues Brothers" image my band was trying to project. This guy liked to do a lot of flashy fills, stick twirling and solos. That also created some tension in the band as the drummer tended to upstage the lead guy.