A blonde and a redhead are walkng down the street.

As they pass a flower shop the redhead happens to see her boyfriend buying her flowers.

She sighs and says "oh crap, Bill is buying me flowers again....for no reason."

The blonde looks quizzically at her and asks "what is the big deal, don't you like getting flowers?"

The redhead answers "sure, but he always has expectations after giving me flowers, and I just don't feel like spending the next three days on my back with my legs in the air"

The blonde then says "If I were you, I would buy a vase"