One page relationship 

A relationship that is so short you can see the beginning and end of it on one page of newsfeed on his/her Facebook

Boy 1: Man, they obviously weren't a very good couple, they were only together for like 2 days.
Boy 2: Yeah, they were definitely in a one page relationship

One page relationship by ManOutsideYourWindow March 25, 2010

One A.M. Wonder 

A one a.m. wonder can be anyone who gets to the point in their day when they just cannot focus anymore. You are exhausted both mentally and physically yet something compels you to continue to function as you usually would however you can’t this state causes you to make bad decisions usually leading to either damage to yourself or the surrounding equipment. A one a.m. wonder should not be allowed near operating or energized equipment and is best suited to be left in a safe environment like an office or home with all sharp objects and tools removed.

Regardless of when Billy goes to do work, he works like a One A.M. Wonder, everything he touches ends up worse.

One A.M. Wonder by IandCtechsATmillstone July 28, 2010

One-man Crowd 

A person who gets a crowd psyched up by being the first one to clap or to shout.
Also a person who claps and shouts, at a small concert or show, enough to replace a small cheering crowd.

Man, that show tonight had a rough crowd, at least Gary was there to get them to start cheering, he's a one-man crowd!

One-man Crowd by DINOLazar August 20, 2010

One boob 

Girls who wear a tight shirt of which only one boob appears. Usually commonly seen on rockers, punks, or eurotrash.

one boob

One boob by anon76889 September 19, 2010

one millionth base 

To have the most kinky sex of your life. So much choking, S&M, buttsex, fetishes, crazy outfits, and insanity that you'll both (or all 3) barely escape with your lives. This entire time though, you'll be maintaining eye contact with the other person(s) and balling your eyes out because you know that what you're doing will never ever compare with 60th base.

Shirley- So i just got out of the hospital.. attempted one millionth base a few weeks ago.
Bobby Sue- Yeah right, your name is way too wholesome for that.
Kyle- Yeah, you're lying. No way you're even been to 38th base let alone one millionth.

one millionth base by toasty-t-dawg March 18, 2011

one pant 

one leg of pants, a singular pant that can be noted as "one pant"

Hey, look at that girl!

I know! She's so trendy with her one pant!

one pant by darealgurl15 April 2, 2011

one photo wonder 

When someone has one picture of themselves that is absolutely gorgeous, it doesnt compare to this rest of their pictures.

John -Hey dude, did u see Sarah's display pic? She looks soooo hot!

Steve- Ya, bro! But the rest of her pics are not as cute, she's a one photo wonder.

one photo wonder by Celtic princess April 8, 2011