O-O

King-side castling or short castling, a move in chess consisting of moving the king two squares toward the king-side rook on the same rank and then moving said rook to the square the king passed over. The move cannot be performed if the player is in check, or if the king or the rook in question has already moved. King-side castling is notated O-O.

1. e4 e5
2. Nf3 Nf6
3. Bc4 Bc5
4. O-O O-O

Rusty o-ring

When a man fucks a person in the ass then wipes the head on the partner's lips as when applying lipstick.

After a jack hammering anal session I turned her around and gave her a generous rusty o-ring just before she had to work.

t o y o t a c o r o l l a

t o y o t a c o r o l l a .

someone:what is dat?
me: T O Y O T A C O R O L L A

Springin them O's

It means when you are eating a concerning of OREOS.

Friend: Hey Kyle you want some OREOS

Kyle: Sure dude
Kyle: *starts springin the OREOS

Friend: Wow you're really springin them O's right now

half-o-laugh

A belly laugh that finally realizes that the joke used in the making of this definition wasn’t actually that funny so the laugh decides to jump off a Cliff

Marty started his skit out tonight on a blazing path, but was soon blind sided by the, infamous, Half-o-laugh.

large o

When a person is giving the Large One or Large O, trying to show he is better than someone or being cocky, abusive.

'Listen to you giving the Large O' or 'that dude was giving it the large o'

Tray 'O' Shit

When the Irish shit a lot and put it on a tray

Oh matey that's a Tray 'O' Shit you got there, better go command q on life