It's when you take a shit ("Anne Frank"), You don't wipe, and the you spread your butt cheeks and put your partner's nose in your dirty bum hole.
Me: "Oh what's on your face?"
Girl: "My boyfriend gave me The Dirty Anne Frank last night."
Me: "What's that?"
Girl: "Smell my nose."
Me: "AHHHHHH!"
Girl: "Yeah, shit nose. Imagine how I felt."
Me: "Good?"
Girl: "Yeah kind of."
"It was going great. She was riding me and then told me to choke her. Next thing I know I'm getting sprayed in the face with OC right as I was about to finish. It was pretty hot"
When you put mayonnaise on a laptop and shove it up someone's pussy until the mayonnaise is used as a replacement cum for lesbians. And then you lick it out. After a month you take it out for some goopy, gone-off mayonnaise.