When you are fucking a chick with big tits from behind and you pull her tits up between her armpits and sides making her nipples face the ceiling. The harder you pound her from behind, the more they jiggle around like eggs in a skillet.
A sex act involving bacon, eggs, and two willing partners. The bacon is used to rub down the penis, usually wrapped around the shaft and tugged on by both sides. The egg is scrambled over and in the females clit/vagina with her partners tongue. This should be done over a piece of plastic wrap so the scrambled eggs can be collected and placed into the frying pan with the bacon. The food is fried up and eaten for a delicious and flavorful breakfast.
Note: Some argue that the name is not sunny side up because the name is not consistant with the action, but instead called scrambled and fried.
To perform this you first must have a boner in a public place. Now if you feel the need to ejaculate but don't want to actually jerk off, just stick your dick under your belt and blow a load right in your belly button, thus the sunny side up