bull gravy 

sperm from an extraordinarily large penis

After I tore tight little ass up with my 14 inch cock, i sprayed my bull gravy all over her

bull gravy by firespeak April 4, 2006

bull dick and gravy 

Prison slang: The gravy concocted from discarded carcasses including bull dick and balls in penal institutions across America

Question: What's for breakfast Bro.? Response: You know that, "Bull dick and Gravy".

bull dick and gravy by Ed'd Negro June 16, 2011