Top Definition
Usually referred to as Monster Energy Drinks. Bull sperm makes you crazy and wild like Latin bull.
Rico:"Dude...what are you drinking?"
Jessy:"A monster...ahh...I just spilled spilled some up my nose!"
Rico:"Haha...now you have bull sperm in your nose!"
by ManOfCars June 18, 2009
2 more definitions
self explanitory
lindsay doesnt like bull sperm very much.
by aaron January 22, 2004
its the cooler way to say Bull Sh**!
Thats a bunch of BULL SPERM I did not sleep with your mom last night it was your Grandma thank you!
by Lindsay January 22, 2004

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