What is Paper Bagger?
1.
A girl who the only way you'd have sex with them is if they wore a paper bag on their head. See also
Cohort A: That girl has a nice body, but what a nasty face
Cohort B: Yep, definitely a paper bagger.
See
2.
Someone with an ugly face but hot body; a paper bag over the head would render them infinitely more sexually attractive.
Amy: Is Katy's new boyfriend hot?
Rachel: He works out a lot but he has acne and crooked teeth. He's a total Paper Bagger.