In the sewer, where's jo-mama?
 

I have seen a lot of dogs but where is the lady?

uh... what dogs. see you need to be more descrptive! jo'mamma is on the big building near the ship. follow the minions voice's and knock them out, then you'll encounter a whole lot more and then kill trhose too, now when the close is clear shoot a zappfly to the blue button and watch the elevator go down and jump on the elevator, look foward and there is Jo'mamma! :D

Just keep going through the sewers, eventually you'll make it to the outside world. Jo'mamma lies near a shipwreck.

yeah, thats what i said.... didn't I?

You need to go off the big slide near the end of the sewer area, and jump onto a ledge. there is a rope, and then you need to use your live ammo to fight your way through the rest of the sewers to get to Jo Mamma. Get lots of boomBats for when you get to the shipwreck.

you obviously havent gone far enough in. just keep going then youll reach a clearing where a load of baddies are. you can take it from there.

MY MOTHER DOES NOT LIVE IN A SEWER!
Oh, wait. :p
Yeah, you need to go much farther than you have.