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.
Dude, my girlfriend and I had sunny side up for breakfast all morning long.