Taking a shower immediately after dropping anchor
. It's called a number three because it should ALWAYS follow a number two. If you don't agree, then here is what will convince you: If you get poop on your hand and wipe it off with a dry piece of toilet paper YOUR HAND WILL STILL SMELL LIKE POOP! (shock)
Aaron Desselle always goes home from work to take a number three. His butt is clean right now.