(I'm guessing your band does not operate in this fashion. But I used to know a superb drummer, dead now, who became a drummer in the 60s when he got thrown the sticks at Fairfield Halls because the drummer hadn't turned up. He was the rhythm guitarist and they reasoned his was the least important part. After the gig, they sacked the original drummer and the rhythm guitarist never touched a guitar again).
Hahaha, that is just brilliant!
"Bloody hell... Okay, here, you do it!"
"What? Me? But I've never played drums in my life!"
"Well.. Just sit down and hit stuff, okay?"
"Ehrm... Okay then, if you say so."