Lobster Claw

The sexual act of using one hand to pleasure a woman's vagina and anus simultaneously.

This is done by joining the pointer finger and middle into one claw and inserting in one hole, while forming the the second claw with the ring finger and pinkie and inserting into another hole.

Jimmy: "Man I totally lobster clawed that girl out last night."
Frankie: "Oh yea? Did you claw her up hard?"
Jimmy: "Hell yea I did, I Lobstered her all night!"