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When a joke is so bad you have to refer to it as a 'moben joke', this is the epitome of shitness.
"Friend A: What did one fish say to the other?
Friend B: I don't know...
Friend A: 'Whats a nice plaice like you doing in a girl like this'
Friend B: Dude, that was a Moben Joke..."
by MSquared February 10, 2012