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.
a sexual position from the kama sutra in which the women is on top, back to the man and they both lean back in a crab walkstyle position. They then proceed to have sex
"Last night the wife wanted me to do her flying fish sandwich style!"