Top definition
A man or woman who is incapable of processing simple information or communicating simple information.
First Guy: I hear a phone ringing.

Second Guy: Its coming from your pocket, mumblelard.

OR

First Guy: What's going here?

Second Guy: NRRRRGGGHHHHHHHHHTHM

First Guy: You mumblelard.
by Jumbe10 August 04, 2006
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