Rubik's Cube and a Man

What does a Rubik's cube and a man's penis have in common?

The more you play with it, the harder it gets.

Penis
Rubik's Cube
Man
Morbidity
Sexuality
Game

Explanation

Explain Bear

Listen up, you dumb dumb. This joke is all about how a man's... uh... "thingy" is like a Rubik's Cube. The more a dude messes around with it, the "harder" it gets, get it? It's funny because it's a double meaning. Now go back to drooling.