Define And Then I Fucked Her Up The Ass Meaning

And Then I Fucked Her Up The Ass
What you say when you're in the middle of a story and realize no one's listening.

I'm sitting at the dinner table, telling my girlfriends family about how we met. As I'm getting to the funny part, i realize no one's listening, so i abruptly finish with "and then i fucked her up the ass!"
By Clarinda