Shit nose
During 69 eating a girl out may result in your nose being in her butthole area giving the male partner shit nose.
Example:
Party douche #1: “Ew, what’s that on Rick’s nose?”
Party douche#2: “I herd Rick and Noel we doing 69, Noel must have given him shit nose.”
Party douche #1: “Ew, what’s that on Rick’s nose?”
Party douche#2: “I herd Rick and Noel we doing 69, Noel must have given him shit nose.”