tdc

tdc means 'tyrant doesn't care'. It is alike to 'I don't care', but notes the word of somebody more popular not caring. Tyrant is always that one guy in the group who's better than the others. If Tyrant doesn't care, then nobody else should care.

Christopher Scoppa: Larry is a name, Joey isn't though.
Larry Campa: Joey is a real name. He's my cousin!
Tyrant: I don't care.
Christopher Scoppa: tdc. Tyrant doesn't care, so I don't care either.