Too insert three fingers (index, middle, and ring) into a women's vaginal cavity. once inserted you are to spread your fingers like a raptor would spread it's claws when finding traction when in pursuit.
When one sits on a chair and grips the chairs legs with one's toes, often to the point of inflicting pain upon oneself.
A: "So I was walking to his room to ask him a question,"
B: "Yeah,"
A: "And I come in to see him doing The raptor!"
B: "The what?"
A: "He was perched like a fuckin bird of prey!"
In Unreal Tournament 2004, a fucktard who thinks its cool to wait by the Raptor spawn point so he can fly around like a moron until he gets shot and then jumps out at high altitudes thinking he's gonna save himself and then dies. All this, mind you, while your power nodes are getting shot to shit by some mountain camper with the flak cannon's alternate fire mode and a super shield pack.
When you are doing a girl doggy style, and you wrap your arms around the girls chest, and around her arms, while elevating her upper body. Then pull out quickly and insert your member into her anus and deliver the goods.
In turn this will make her very unhappy and unable to extend her arms and screaming in an animal like manner. Therefore making her look and sound like a Velociraptor.
The BrownRaptor should and could be pulled on any girl that is willing to do this.