along with sexual progression euphemisms associated with baseball (first base: making out, second base: hand job, etc.), bull pen refers to a one night stand where one's perception is sub-standard, either due to intoxication, THC, or overt horniness, and the subject has sex with a very very unattractive person.
by Ian Wetzel September 18, 2004
Get the bull penmug. Guy1: You know Justin Bieber?
Guy2: Yeah, what about him?
Guy1: He won the Artist of the Year award the other day.
Guy2: What?! That's such bull-to-the-junkie.
Guy2: Yeah, what about him?
Guy1: He won the Artist of the Year award the other day.
Guy2: What?! That's such bull-to-the-junkie.
by MrCybrody January 12, 2011
Get the Bull-to-the-junkiemug. by Klitman April 22, 2006
Get the bull hornmug. by Twiz August 23, 2005
Get the young bullmug. by Oak Squad August 17, 2018
Get the Red Bullmug. by varg verse May 13, 2005
Get the bull doggmug. 