yo mamas so fat when she was asleep she burnt her arse on the lightbulb
yo mamas so short she jumped off the kerb and commited suicide
yo mamas so skinny she turned sidewards and disapeared
yo mamas so hairy king kong thought she was his sister
yo mamas so old when the lord said let there be light she was the one that flipped the switch
i picked my fave from diff insults lol (the last 1s my fave)