Allergic

A blonde and her boyfriend decide to go to the movies.


During the previews, she asks her boyfriend to get her some M&Ms.


"Okay sure. I'll be right back."


When he gets her the candy, she immediatly opens the bag and picks out all the brown ones. Then she throws them away.


"Why did you do that?" asked the boyfriend.


She replies "Because I'm allergic to chocolate."