1. The sexual act of eating out a girl's vagina while she is down on all fours, or in the doggystyle position, so that your face is positioned between her two butt cheeks, or 'buns'.
2. A cartoon sandwich with a dead, rotten fish lying arched between two buns.
Danielle got down on all fours so her boyfriend could give her a fish sandwich.
you follow a girl home, and when she goes inside her house, knock on the door and when she answers, punch her in the nose and knock her out. then you rub her vaginal fluids on her face, then you cum on her face so you got the ketchup, fish, and the mayonnaise
my girlfriend was being a pussy last night, so i followed her home and gave her a fish sandwich