Define I've Got Something In My Front Pocket For You Meaning

I've Got Something In My Front Pocket For You
The song in which Butters used to tap dance to, until the incident where his shoe came off and killed the whole fucking crowd

"I've got something in my front pocket for you, why don't you reach down inside, and see what it is? Give it a little squeeze and say 'how do you do?'"
By Elfreda