Rule of Thumb

During coitus, if you're ready to move from the pink to the stink, but you're not sure if she's into it, you can always gently mash your strongest thumb into her butthole, as if to say, "What do you think?" If she smiles or goes with it, trade your thumb for your cock Indiana Jones style.
On this page, you will find 30 slang terms related to Rule of Thumb. Some of the top words include: back door action, Stinky Pinky, Hitchhiker, feltcher soup, corn hook, and 25 more.