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2.
in dating, this is a lineup of associates who specialize in your tastes. as in baseball the manager needs a starting pitcher, middle reliever and a closer. in dating, some people various have fetishes and tastes. a bullpen satisfies an individual's various sexual needs. a bullpen is also a good way to keep a man from becoming pussywhipped.
tom leykis tells all his sons avoid girlfriends and instead to keep a bullpen. he's a smart guy who knows everything men need to know in order to get laid.

Tom: Sometimes I'm a chubby chaser, sometimes I like asians, and sometimes I like MILFs. My bullpen has these types along with the hotties.
by C. Norton February 06, 2009
 
1.
1. In baseball, the bullpen (sometimes referred to as just "the pen") is the area where relief pitchers warm-up before entering a game. Depending on the ballpark, it may be situated in foul territory along the baselines or just beyond the outfield fence.

2. It also refers to an office workspace populated with desks but no separating cubicles or walls.
1. Goose Gossage warmed up before the 7th inning and then went into the game to trounce whoever his team at the time (White Sox, Yankees, Padres or Mariners) happened to be playing.

2. Finch from Just Shoot Me works at the periphery of the bullpen, right outside his boss's door.
by 5150pacer January 09, 2008
 
3.
When someone is in a relationship and actively lining up a new one.
bob's gf is a real drag. susie at work is so hot. bob flirts with susie to see if she's interested. when he knows susie is hot for his pants and in the bull pen, he breaks up with his gf.
by sillyboho December 19, 2008
 
4.
Holding cells were called "bullpens" because police officers were at the time called bulls. Bullpens are still the name inmates call holding cells. You are held in the bullpen at county jail until the bus takes you to court. At court you are held in another bullpen until you are called in front of the judge. Then you are escorted back to the bullpen and are held there until all the inmates are called in front of the judge. Then everyone is escorted back to the bus and sent back to county jail where you sit in another bullpen until you are escorted back to your housing unit.
Damn I sat in the bullpen for 8 hours today before I was called in front of the judge!
by ronmetrx1 July 01, 2011
 
5.
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.
every time i drink i wake up in the bull pen
by Ian Wetzel September 18, 2004
 
6.
The spot where you are standing in the room when your about to have sex for the very first time with that certain girl and she goes to freshen up in the bathroom.
"She kept me in the Bull Pen before we got started."
by Slappy Fack & PaPa ZiTT November 30, 2006