Mattis says Trump asked the difference between Navy SEALs and seals

I'll bet there are a lot of Navy Seals that begin to confuse themselves with seals. They spend so much time in the water or crawling on the beach in training, they've probably had a few bull seals attempt intercourse.

What do Tupperware and walruses have in common? They both like a tight seal.

I thought the Navy ones could hold their breath longer and had stricter body fat requirements.