There’s a little 4 note tag that often comes at the ends of comic songs. In the Bugs Bunny cartoon where he goes to war with an opera singer, he ends the cartoon by playing this little tune on a banjo.
If the tune has words, I don’t know what they are, but my father used to sing it as “Without a shirt.” As kids, we found this hilarious for some reason.
I don’t know how else to describe it except in this way: If it was played in the key of C major the notes would be G A G Bflat, with a fermata on the last note.
Where does it come from? Does it have a name? Does it have lyrics?