When a guy blocks a guy from having sex they are called a cock blocker but when a girl blocks/ stops another girl from having sex they are called a twat swater.
Shauna: Hey heard you finally got into Tristans pants last night, Congrats!
Kayla: Almost but Lexy came in totally wasted and totally ruined it. She's such a twat swater!
When a person's index and middle fingers are pointed outward, the thumb raised and the rest of the hand is balled into a fist, and the index and middle fingers are inserted into a vagina, it is known as a Twat Gun.
He formed his hand in the shape of a twat gun and inserted his fingers into her pussy.