A commonly used phrase originating on call of duty video game referring to claymores. Claymores are similar to rat traps because it is a trip mine that will go off as soon as a player walks into it or by it. basically meant to demean the player that walked into the trap by implying he was as stupid as a rat for walking into his/her own death. also referred to as mouse traps if you are trying to demean the player using them as if to imply they are scared of mice.

When a guy puts his dick between his legs and snaps the girl in the face as she goes down.

when a man takes a mouse or rat trap to a woman’s nipples to squeeze the milk out when he is thirsty.