abbreviation for "Potential to Blow
Up ratio", which is a scale ranging from
1 (low) to 10 (high), that rates
the chances a currently
hot girl will someday
and become overly chubby and unattractive.
Key note: One night hookups are exempt from
the P.T.B.U ratio as the girl being rated is usually hot, and even though she is likely to blow
up in the future, the aforementioned potential blow
up will not effect
Tom: "Check out that chick over there... she is smoking hot."
Brent: "Dude, look her thick upper arms and those kankles
, she's got a high P.T.B.U. ratio.
Tom: "Man, who says
I'm proposing? Bang it tonight, leave it tomorrow.