The first half of a joke popped into my head the other night, but the muses have so far withheld the punchline. I'm sure there's a good one somewhere, and it's driving me nuts.
A regexp and a hash slice are sitting at a bar.

The hash slice turns to the regexp and says "got a match?"

The regexp replies "___________________________."

{much laughter follows}

Kudos, and maybe a few votes, to whoever comes up with the best punchline. You can even tweak the setup if that helps.