I play mainly Irish trad , some more generally folky stuff and the occasional Pogues cover (I know...)with a couple of mates under the name Gone to the Dogs.
Our singer/guitarist inevitably announces the next song, maybe gives some background - and the fiddler and I get ready to go; at which point the singer almost always reaches out for his drink and takes a mouthful!
Why can't he take the drink first (during the applause for the preceding piece maybe) THEN announce the song, so we can go straight into it! Drives me crazy :-)