when a male has sex with a female partner in the anus and then procedes to ejaculate. he then keeps his penis inside her anal cavity until he becomes soft. then the male urinates while still inside the anal cavity of the woman. when the mixture is deficated out, it comes out yellowish-white, much like a lemon cream pie.
"dude, last night i did that girl in the ass!"
"did you give her a lemon creamer?"