booty call rules

This is from an article on huffingtonpost.com by Chez Pazienza. It's about John McCain, but this is the part I liked the most.

A friend of mine once joked that in order to pull off a successful booty call, there are two things you absolutely can't do: 1) wait until the very last minute -- say, four in the morning -- and 2) actually come right out and admit your intentions in no uncertain terms to the person you're calling. (This conversation stemmed from the fact that his roommate had, the previous night, come home drunk from a club, called an ex and, when she picked up, shouted, "Hey, this is a booty call!" into the phone.)

It made me laugh and I imagined one of my male friends drunkenly shouting "Hey, this is a booty call!" into a phone.