I totally agree...To be honest, the adults period, moms and dads are just plain ignorant, on both ends!
I think the show is just overly cliche...The black mom is the worst though...She's just a complete fool and adding to the stereotype of the "angry black woman". She knows that the white mom wasnt calling her a bitch, if you can understand the context of what she was saying last eposide then you're just a retard.
The white woman is crazy, but I think she's sincere, just a little naieve. She really doesn't know any better. The "beautiful black creature" comment is a little awkward and antisocial, but I think shes juswt crazy. She reminds me of my mom, only to the tenth power. Just loves to talk and socialize and probably does it a little too much.