To solve this puzzle, type in the punchline to the joke into Certitude, and the coordinates will reveal themselves. You'll need the exact word or phrase. Don't worry about punctuation.
QUESTION:
Bono & The Edge walk into a bar.
The barman says: ____________
This series is inspired by a series of caches in San Antonio by TromboneMan1. Most of these answers can be Googled or found via the Twitter account @DadsaysJokes.
You can validate your puzzle solution with
certitude.