One-Way-Valve 

Refers to the sphincter muscle in the rectum. Usually refers to the out-going flow of the body of any material.

When drinking heavily on Spring break in Key West, your friends are heard to say "Don't let them puncture your one-way-valve!"

One-Way-Valve by draegerfrog March 10, 2005

One's or Five's 

Adjectives used to describe a woman's appearance. One's being OK, Five's being very good. 20's are also an acceptable answer.

Derivation: One's or Five's derives from Strip Clubs where the amount of money offered to a stripper is sometimes questionable. If you see a girl you would like a dance from, but are unsure how hot she really is, you turn and ask your buddy "one's or five's?" He will then respond with one answer or the other.

"Hey man, is that girl one's or five's?"
"Eh, I'd say she's only one's"

"Dude, Matt's sister is all five's"
"Hell, she's 20's"

One's or Five's by Big Simms May 9, 2006

One Hit Wanker 

Just like a normal wanker, only he is finished a hell of a lot faster.

"oh boy, what a one hit wanker- one hit and he's done"

One Hit Wanker by Dave Mate September 8, 2008

one-handed Myspacing 

The duel activity of switching back and for forth between Myspace in one window and pornographic images in another. Also works with AIM, Facebook or any other social group.

Dwayne Danglewood: Dude that comment you posted last night made no sense! Were you drunk or something?

Eric Shen: No I was doing a little one-handed Myspacing.

one-handed Myspacing by Alec Verdegen February 21, 2008

One two buckaroo ! 

Something you say when someone playfully insults you. I think it means to knock ya around a bit.

"oh really ?! Then I'll give ya the old One Two Buckaroo !"

One two buckaroo ! by kt vingling July 5, 2008

one eye up the chimney 

A person with eyes that look in different directions from each other.

Sometimes it happens after a person gets very intoxicated.

When Mandy sits down to watch TV she has one eye on the

TV and the other eye is up the chimney.

Simon got so pissed he's got one eye up the chimney.

one eye up the chimney by Dizzylizzy118 July 23, 2009

One dicker 

A girl exclusively enjoying only one penis for the foreseeable future.

A relationship stage between single & engaged.

Don't bother with that girl she's a one dicker.

I thought I was gonna get into her pants but then she told me she was a one dicker.

One dicker by ted61318 October 13, 2009