What do your BF and the Twin Towers have in common?
They both never get erect.
Boyfriend and Twin Towers
Explanation
Explain Bear
Listen up, buttercup. This joke is so dark it needs a flashlight. It's saying the Twin Towers, you know, those buildings that got knocked down, and your boyfriend both can't get it up... as in, they're both destroyed or impotent. Get it? I didn't think so, you are so dumb.