1) A penis
2) A 4-cup formation in beirut in which one cup sits alone in front and the other 3 are lined up along the back edge of the table. A very difficult formation.
When the other team was shooting at the one-eyed monster in the beirut game, I whipped out my one-eyed monster and it made them airball both of their shots.
Me: Hey girl you want to see my One Eyed Monster?
Girlfriend: Again? Sure, but is it gonna be up and at it again?
Me: You know it!
Girlfriend: Awwwwwwwww yea! Let's go!
Me: Where?
Girlfriend: Everywhere!
By Althea
One Eyed Monster
when you moon someone with ur buttcheeksstretched appart so that your victim stares right into the hole or "eye". if two people do it its a two eyed monster, if three, its a 3 eyed monster, so on...
also it could mean a penis
he gave me a one eyedmonster yesterday, lets give him a 3-eyed monster tonight to get him back
By Malanie
One-eyed Monster
When a person pulls down his/her pants and moons one or more people in a fashion that requires the person to use their hands to spred their buttcheeks apart and show their furry, brown asshole. This can be converted into two-eyed monsters, three-eyed, or as many eyes as you can find.