Or bottomhorse.
A Dan Antopolski joke I believe.
I too saw another list (with that one on it), and thought it was pretty uniformly bad. But I saw it on FB on the feed of a friend of mine who loves going to comedy gigs and is FB friends with a lot of comedians. So when I got drunk and started incoherently expounding on the flaws of all the jokes… well it didn’t end well for me. I’m probably the only person in history who’s apologised to Michael Legge.
[I was also so drunk that I failed to understand one of the jokes I thought was terrible. When I sobered up I realised it was really funny.]