Sexual cannibalism is the concept of getting a masochistic thrill off of being deeply bitten and having chunks of flesh being swallowed by your partner, this is a very obscure fetish and considered very...sick.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failure shower.