Messy hair. The flat, lifeless appearance of hair, or wild, 'uncontrollable' appearance of hair when a motorcycle helmet is removed. Most affected are women and it's a common problem for those with a coiffure.
When she took off her helmet, everyone could see she had 'helmet hair'.
Her 'helmet hair' took a lot of brushing-out before her hair looked nice again.
Her 'helmet hair' took a lot of brushing-out before her hair looked nice again.
by ColonelBlimp September 04, 2011
A homosexual term for when one guy butt fucks another guy. The "mud" is a crude term for shit in the bottom's anus. The "helmet" is to describe the shape of the head of the penis. When the top (helmet) rams his dick into the anus of the bottom, he gets shit (mud) on it. Thus, "mud on the helmet".
by rjc July 08, 2006
by soundchild January 26, 2008
Very satisfying felatio.
by MC Mantis July 15, 2008
by Quagmire April 03, 2003
by BigDNash January 24, 2019
Having a grotesgue and disfigured head on the tip of a man's erect penis. It is caused by misuse and torture of one's cock. The bumpy helmet can cause a man to be off balance and fall over like a tethered bowling ball to your waist.
"Milton had a boner but due to his enormous bumpy helmet on the tip of his cock he lost his balance knocking Craig's reports off his desk."
by Fergloch August 25, 2010