5. “I’ll Show You The Bumps Later.”

Chances are “the bumps” isn’t just some sort of new handshake that you can’t wait to do with your buddy, but some pretty disgusting things that sit somewhere quite unfortunate for you.

Even if it is something that is completely harmless, you’d probably react pretty disgusted if you heard someone say this in public too, so it’s best to just wait until you’re in private to even consider saying it.