The act of fantasizing/masurbating about a sexy Professor and becoming either wet or hard during their class and subsequently going home and masturbating about them.
As I listen to my Professor's voice in class, I am seibeling of him with his hand in my pants.
Any food comprising of multiple foods pressed/forced together. Kinda like a sedimentary rock is made up of multiple rockspressed/forced together...except its food.
The snackmy friend was eating was a Sedimentary Food because it was formed of multiple foods smushed together.