2 definitions by barracooda

P-Party
B-Big
T-Time

meaning, partying hard for no specific time limit or specific place. usually a party with lots of alcohol and lots of members of the opposite sex.
*texting*
Marc: Yo brah, what are you up to?
Shaun: Just got back from Cali.
Marc: What did you do?
Shaun: We PBTed everyyyy night.
Marc: i love the west sideee, bitch.
by barracooda June 17, 2009
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an alternate term for "calling shotgun." The person who calls "shotgun roundtrip," gets to ride in shotgun(aka the passenger seat) to and from the particular destination.
A group of friends are walking to the car to get ice cream..
Jamie: Shotgun Roundtrip!
Ang: Aw man, I wanted to ride shotgun on the way home!
Jamie: too late!

(Now Jamie gets to ride in the shotgun(aka the passenger seat) to and from the ice cream shop.
by barracooda June 5, 2009
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