Tell me your best your mumma jokes. HUMOUR ME! E.G Ya mummas so fat she doesn't wear a 'G' string, she wears a 'G' rope. Ya mummas so dumb she thought a pig pen was somrthing you write with Ya mummas so fat when she goes to the beach greenpeace tries to roll her back in. Ya mummas so fat when she jumps in the pool the water jumps out. ya mummas so fat, when i was doing her last night i rolled over 7 times and was still on top.