Overheard on a local jazz show:

So this trombone player is in the grocery store.  He's been wandering
around for a few minutes, checking prices, and he winds up examining
vegetables in the produce section.

Suddenly, he shoots upright and exclaims, "Oh God!  My trombone's in the
back seat, and I left the window open!"

He rushes out to the parking lot, and locates his car.  He quickly looks
in the back window--and there are 2 more trombones laying next to his.

Ha ha.

Bob K.