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Similar to mandem, this is a group of mothers who are often part of the same social circle. 'Mumdem' can also be used to refer collectively to a group of mothers or all mothers.
Mo: bruv how the hell did you get your girlfriend's mum to not hate you?
Wes: ay, you know I'm good with the mumdem
by poopgrenade July 13, 2018
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A joke. Like, the worst joke anyone could make. A joke someone is proud of but is fucking abhorrent and they don't realise it because they're a dense motherfucker.
Man 1: "Hey, why did the chicken cross the road"?
Man 2: "Fuck off you fucking Mumdem."
by aaronprime March 21, 2018
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