An oldie, but a goodie...

I was behind a Grob 115 that checked in with the tower, holding short of the active, ready for takeoff, with a Shorts Skyvan on final. This is what happened next...

Tower: Grob 123, sit tight. I'll get you off just as soon as I get my shorts down.

[pause]

Tower: (With laughter clearly audible in background) Oh, you know what I meant!