halorgasm 

1. (noun, English) The euphoric and/or pleasurable sensation induced by the Xbox video game "Halo." Usually experienced during massive multiplayer experiences, or when the player hears the cue word "killtacular."
2. (verb, English) To experience a halorgasm.

"When that 16-person Halo game started up, and I immediately got ravaged by four rockets at once, I had the best halorgasm of my life." or,
"Gunning down everyone on the blue team made me halorgasm hard."

halorgasm by Kent October 23, 2003

Hairgasm 

When a person get's an orgasm just by touching another person's hair!

Kiersten: I need some new sandals we need to go to the buckle!
Chad : Hey isn't that Molly over there at great clips!
Kiersten: CHAD NO! You stay away from that place!
Molly : What the fuck!
Chad : Ah! Ah! Ah! Ah! Ah! Ah! Ah! Ah! Ah! Ah!
Molly: Get The Fuck Away From Me You Creap!
Kiersten : You will have to excuse my boyfriend he tends to get Hairgasm's quite often!
Chad : Ahhhhhhhhhhhhhhhhhhhh! Ahhhhhhhhhhhhhhhhh! Ahhhhhhhhhhhhhhh!
Molly : Well he just got cum all over my hair I'm callin the cops!
Kiersten : Run Chad Run!!!!

Hairgasm by SlopNChop January 29, 2017

hairgasm 

What women in those goddamn Herbal Essences commercials have.

*woman is washing hair*
"Oh! OH! OH!!"
*hairgasm*

hairgasm by tabbatsoli December 13, 2005

halfgasm

A physical and emotional sensation experienced at the peak of an exciting situation that is roughly half as sensational as the sexual sensation resulting from the stimulation of the sexual organ.

This sandwich is so good it is giving me a halfgasm!

halfgasm by ianbrunner March 30, 2009

Halfgasm

The act of having an orgasm that doesn't give you pleasure. A small amount of cum is released, but the intial feeling of an orgasm is not there. Is normally the result of some bad internal timing.

Joe: How'd it go with Susie last night?
Bob: Terrible, I only had a halfgasm.

Halfgasm by King Singh December 17, 2008

H2orgasm 

When you drink a glass/bottle/canister of nice cool water, it feels so good that you can't help but sit back in your chair and feel good.

After the long, hot august day, I sat back in my chair, opened my Nalgene bottle, and had an H2orgasm

H2orgasm by Noah Pepera-Rudd September 22, 2007

hairgasm 

when you are touching someone's hair and they writhe with ecstacty almost sexual.

as i comb through her hair, she moans as if she is having a hairgasm

hairgasm by bkfrogus August 7, 2012