Women who seek out baseball players for sexual encounters, essentially baseball groupies. This especially applies to groups of women who sit in the stands near the bullpen, hoping to talk to players.
The Bullpen Beef were sitting in the stands, talking to the relief pitcher, and hoping he would take them out with some of the other players for a nice meal at the Outback, followed by fellatio.
by g-money78 April 1, 2009