He had too much to drink before he went swimming!
He finishes her drink EDIT: Apparently this is Conan's joke, so all credit goes to him. I just heard it from a friend of mine and I had no idea.
Their Quadratic Formula!
Because all the Mexicans who can swim well, jump high and run fast are in the United States.
It's an accident if a boat full of refugees starts to take in water. A catastrophe is if they know how to swim