Two naked men embracing, causing their penis tips to make direct contact.
After shedding their swimsuits, Tom and Justin hugged Helmet to Helmet.
by Shaken not Sturdevant October 28, 2006
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If I was a helmet, I'd wear a helmet helmet, too.
by Emerson Crossjostle March 10, 2013
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The first meaning is another name for the head of the penis. Due to the similarity of shape and positioning on the end of the penis.

However you can also call someone a 'helmet'. You would use this if they are acting like a total idiot by saying or doing ridiculous things.
"we fucked all night, and now my helmet is red raw!"

"I'm sick of him always pulling his balls out in front of everyone when he's drunk- he acts like a total helmet!"
by Eminence of vulgarity June 9, 2012
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A helmet is British slang word that's used to describe an individual who's being stupid or has completely no reputation to join a conversation or add their opinion.
Gary: So yeah I was walking down the street yeah and this stunn--
Oliver: Yeah but I don't care.
Gary: Who the fuck is this helmet? Jog on.
by Lawterian August 26, 2017
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Like the similar definition on this page, the act involves inserting one's head into the particular orifice. The original example that I've seen, and most others have also seen, is a video of a bald man putting his head (up to his ears) into a woman's vagina.
Did you see that video where that guy put his head in that chick's pussy? That's gotta be one seriously loose hole for helmeting.
by LazinessPrevails September 17, 2009
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A helmet is someone who tries too hard and thinks they are proper top like they're on par with the head of a penis. Ironically however they are more like a skid mark on an old mans pair of gruds
Helmet: I ran 10k in 30mins today.
You: save it you fucking prick I'll bang you out if you carry on like that you helmet
by Lee The King July 23, 2017
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A window-licking, raisin-loving , mcqueenie wearing moron who wears a state-appointed bike helmet that probably has a rubber Mohawk.
That helmeteer rides the short-bus.
by Tard tamer 3000 February 20, 2017
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