my girlfriend sprang coitus interruptus on me the other night when she was riding me cowgirl style and i ended up with a belly full of sperm
sexual practice in which the penis is withdrawn prior to ejaculation to prevent the deposit of sperm into the vagina
"my girlfriend sprang coitus interruptus on me the other night when she was riding me cowgirl style and i ended up with a belly full of sperm" What is the definition of "coitus interruptus"?