Possibly a bit inbred

Because according to Sherman his mum molested him and then tried to send him away to a strange old witchwho lives with penguins and a cat on a far away Island, paid for the whole thing.... Then by the looks of the pics the strange old witch which we will call 'dirty Beatle' which is actually just the code name for someone who had to touch Sherman's stinky bettle arms.... well by the looks of it when the old witch sent him back he went and got his cousin pregnant.