To ejaculate into the orifice of a man or woman, then leave your penis in said orifice until the point where you are able to urinate. You then urinate into the afore mentioned orifice, after which your conquest contracts the orifice muscles and forces out the ejaculate and urine as if the contents were under pressure.
Holy hell, Dave gave me such a lemon cream pie the other night...I'm gonna have to have my parent's couch professionally steam cleaned.
A Lemon Creampie is the sexual act where the man gives a girl a creampie, then pisses in it right afterwards.
I gave my girl a Lemon Creampie