rainbow express, is where a college boy is partying with some friends in San Fransisco on spring break and is new to the rave seen, he is taking exstacy for he first time and is atripping balls walks in to the wrong party and ends up being ball banged by a group of guys.
Timmy awoke to a terrible pain in his ass and as he looks around the room and saw all the nude men he new he just took a ride on the rainbow express.
by Dms79 December 26, 2017
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