One handed splash

Washing just your privates with one hand in a cup shape splashing water on you.

Son- "ahh! dad im late for school and i need to take a shower"

Father- "uhh just do the one handed splash"

One handed splash by son of that guy October 12, 2009

one hit bro 

A colloquial phrase often loudly professed by sub-humanoid residents of the New Jersey shore, often in self-admiration of one's ability to render another Jerseyan unconscious in a single hit.

Yeah bro, this one bro was like "hey bro i dont like the way you fist pump bro" so i fuckin' knocked him on his ass in one hit and was like "one hit bro!"

one hit bro by stunted April 29, 2010

One-Roast 

The act of pulling a sexual partner and having sex for one night then never contacting them again.

I stayed at colins house and he fell asleep so i gave stacey the one-roast.

One-Roast by Leishmeato July 18, 2010

One-Curve 

A girl who is large around the mid section, and instead of having many curves like attractive girls do. She has but one curve at the mid section, starting thin towards the head then gets wider and gets thinner toward the feet.

Dude that girl is such a one-curve!

Oh God! Don't look now the one-curve is coming!

One-Curve by baddleeroybrown September 6, 2010

One More Song Syndrome 

When you start a Guitar Hero or Rock Band session and continually tell yourself or your friends that you'll do one more song and then it's over.

The next time you look at the clock, three hours have passed and you've played nearly every song on the disc.

Person 1: I can't believe we played every downloadable Foo Fighters song Rock Band has to offer! What do you want to do next?
Person 2: How about one more song?

Two hours later:
Person 1: Alright. We've also played every Blink-182 song there is. Think we should go to bed?
Person 2: I've wanted to play 'Rebel Yell' for the last twenty minutes.
Person 1: Rock on!

One hour later:
Person 1: I think we've got the syndrome.
Person 2: What syndrome?
Person 1: One More Song Syndrome.
Person 2: No wonder we're virgins

One More Song Syndrome by EderC October 15, 2010

one-blocker 

One who looks fantastic from about a block away, but as you get closer to the person, he or she has major flaws; i.e. the beautiful tan skin is baggy or wrinkled, the bleached-blond hair is dry and straw-like, etc. The person is, overall, less hot than originally anticipated.

My neighbor's a one-blocker.

one-blocker by Dirty Old Omer November 11, 2010

One Penny 

An evil penny or some other type of evil coin that always manages to find another owner when the previous one leasts expects it.

One penny to rule them all,
One penny to find them,
One penny to bring them all
And in the darkness bind them.

One Penny by frodobagginsishere February 18, 2011