The top of a penis shaft. It resembles an equipment helmet thats used in sports to protect your head from injury.
Woman "My boyfriends pink helmet is so big, I almost chocked trying to suck it."

Man "I clubbed that stripper on the head so hard with my pink helmet, she went to the hospital with a concussion!"
by FernandoAl December 1, 2013
Get the pink helmet mug.