The act of applying an Alaskan Pipeline onto one's forehead and the preceding to eat out a women while having the aforementioned Alaskan Pipeline insert into the Anus.
Brandon: "Dude, did you hear what Patrick and Asia did last night?"
Alex: "Yeah I heard Patrick gave her a Prancing Unicorn, She said it felt amazing. I think that'd be weird as hell"
Gabby: "So you heard Patrick gave Asia a Prancing Unicorn right? She said it was the greatest feeling ever."
Regan: "Yeah I wish my boyfriend would give me one....."