The time of year when your family and friends begin to encourage you to shave off the manly animal growing on your face that is still left over from the previous No Shave November.
Girlfriend: "Is that a small kitten on your upper lip?"
Boyfriend: "No babe, that's my stash left from No Shave November."
Girlfriend: "You must have missed the memo. It's Shave That Shit September, so shave that shit."