Ejaculating seminal fluid into a cup of black coffee, and stirring the coffee into a cappacuino-like appearance. This form of spunking is usually performed after eating a box of donuts or while watching adult entertainment.
"Do you have a cup? I wanna spunk on a coffee later tonight after eating some donuts."
"Have you ever spunked on a coffee?"
"Have you ever spunked on a coffee?"
by GOPI VIGNARAJAH May 12, 2006