It's a bit difficult to give context to Fathom without ruining the fun of the game, but I daresay it's worth your time. A bit more here, and the comments there seem to offer a few useful hints if you're getting too frustrated.
A woman walks into a bar and asks the bartender for a double entendre, so he gave it to her. Ba-dum dum. What's green and has wheels? Grass. I lied about the wheels. Ba-dum dum. A baby seal walks into a club. (pause) Ba-dum dum. How many kids with ADD does it take to change a lightbulb? LET'S GO RIDE BIKES! Ba-dum dum. A priest, a rabbi, and a minister walk into a bar. The bartender says, "What is this, some kind of joke?" Ba-dum dum. Instant Rimshot. For all those times you need a big red Flash button that'll give you a well-timed rimshot. (Jokes courtesy of Ask Mefi.)