One finger 

When your so pathetic you only pleasure your girl with one finger

Weston totally pulled a one finger one her

One finger by Killtheporr November 2, 2016

One Hitter

A device made for people who cannot roll a joint.

Can I borrow your one hitter cause im all out of papers

One Hitter by PDESIL April 21, 2010

one thing led to another 

Fairly common term used to describe the process of events that occur when two individuals meet, grow romantically involved and have sex.

Bob and Sheila got together for a date. They hit it off and went back to Sheila's place. One thing led to another and they ended up sleeping together.

one thing led to another by Wordmaster August 17, 2004

one of those 

A shit that conjures sensations so nasty that it compels one to take a shower afterward.

A: A shower? Now?!
B: Yeah dude, just had one of those.

one of those by 1-1-2-3-5-8-13-21 March 21, 2010

One Week Anniversary 

What 13-year-olds perceive as the best day of their lives and they think it's the next step to marriage. They're ready to maul their one-week-long boyfriend's boner.

Shanghai: OMG I can't believe it's been one week with bae!!! I love you so much <3<3<3<3<3<3<3
Tokyo: OMG want to cum ovur and celebrate with some friends? :):):):):):):) Happy one week anniversary!
Logical Person: Fuck you both, you're both fucking stupid. You're 0-years-old and think you're the coolest person. Stop looking for attention you asshole.

One Week Anniversary by MoonShark July 21, 2016

One Eyed Pirate 

The act of a female impersonating a one legged pirate by allowing her lover to kick her in the shins and cum in one of her eyes.

Girl 1: "why are you limping and wearing an eye patch today?"

Girl 2: "Oh, my boyfriend just gave me the old one eyed pirate last night. Aarrrrrrrrr me hearties!"

One Eyed Pirate by DannyBoy78 September 27, 2008

one string banjo 

organ with a single banjo string, ie the penis

Kyle: What were you up to last night?
James: I was playing my guitar
Kyle: Yeah? are you sure it wasn't the one string banjo, u tosser

one string banjo by spankypants52 May 4, 2009