also "diss"; to disrespect, make fun of, fail to obey, or not be impressed by someone or something. Normally used by the dissee, not the disser; Being dissed is something to complain about, dissing is not something to brag about.
You don't like my car? Are you dissing me, man?
Don't diss me when I tell you to do something, boy.
He noshowed again, he can't diss me like that!
What one might offer as an answer to a personal question he or she doesn't know the answer to or feels uncomfortable answering. Used in a Seinfeld episode.
"Hon, do you love me?"
"Umm... mulva?"