My partner acts the straight man without even trying. The other night I constructed a thin tale around two one-liners while he tuned his guitar. 'Eagles may soar but weasels don't get sucked into jet engines.' and '...the early bird gets the worm but the second mouse gets the cheese.'
Unfortunately, too short, so I dipped into my acordian case and came out waving a sheet of jokes. After five, the audience was laughing but I was fed up and started to make cracks about his tuning; he must have been listening to the jokes instead of concentrating. In the end he threw down the guitar, gently, and said to hell with the bloody thing and we sang acappella. That got a bigger laugh than any of our songs.
I heard somewhere that Billy Connolly was a good folk musician but that people kept asking him to tell jokes until he switched careers...and the rest, as they say, is...
...a great idea for a thread.