While you're having sex with a woman and you cover both your genetalias in cinnamon and you get into a 69 position. You give eachother oral sex and the first one to cough up the cinnamon looses the cinnamon challenge.
Guy 1: Dude there's alot of cinnamon on your bedroom floor.
A noun, used to describe an extremely fat person who has had their shirt ripped off, and has been ejaculated on by multiple men, giving them the appearance of a cinnamon roll. Also referred to as "Martin".