the crimson chin

When a man sticks his chin into the vagania of a woman on her period.

A person that has a specially large chin. Like the super hero from the show Fairly Odd Parents.

A very difficult maneuver requiring the participant to go through the motions of eating a girl out but with your chin. This term is most commonly referred to as chinning or chin. The crimson chin is when one chins a girl who is on her period causing the blood to be stained on the chin, leaving a crimson hue on the chin, dubbing the crimson chin.

1. v. to eat a girl out while she is on her period.

alternatively,

2. v. to throat-fuck an individual to the point that your balls slap against their face with such voracity that their chin becomes chapped and red, thus giving them a "crimson chin".

Daringly, these two actions can be performed at the same time to result in what can only be described as potentially one of the leakiest sex acts.

when 69ing with a girl on her period, eating out her pussy with one's tongue and massage her clit with one's chin.

When a guy eats a girl out while she is on her period.

The Act of Sexually moving you're chin up and down, in a caressing motion, on the Clitoris, while she is on the Red Streak