When you jizz on some ones eyes when they are asleep. The cum hardens and crusts over, therefore acting as a cement for the eyelids. The victim wakes up, but can't open their eyes.
"I gave Jay the best angel cake last night. He flipped out when he couldn't open his eyes."
Angel cake means vagina, basically. The whole female crotch area. Usually to be used when overwhelmed with the female form.
Woah James is in a forest with 4 naked chicks; that's alot of angel cake for one pork sword.