1 definition by Plumpdump123

A very fat person. So fat he's often mistaken for the guy from whale wars or Paula Deen. Daily diet is many lunches at McDonald's, five guys, and many sticks of butter. Also uses cheat codes for any fitness games he/ she owns. Only watches food channel and is severely suffering from diabetes.
Tim: Whoa dude did you see that mubzy he's freaking huge!

Bob: Holy hell he is very mubzy.
by Plumpdump123 July 1, 2012
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