When a male and another male are having sexual intercourse, and one or both of them ejaculate into the other's rectum. On certain occasions, when the man's ejaculate volume is large enough, it causes the rectum to overflow. In other words, a gay cream pie.
When a male is having intercourse with a women and cream-pies in her hoo-haa. You then proceed to go down on her giving her a raspberry kiss, bubbling up the ejaculation.
Yo bro I wanted to get a little spicy with my girl and instead of a dirty Chewbacca, we decided to switch it up and do a raspberry pie.