Another phrase originating from greensprings school, used in a similar manner to wait no telling. It is used to express disinterest in what someone is telling you about. And insinuating that their mother would be more amused by what they have to say than anyone else.
David: Never do that again you are so annoying!!
John: Don't tell me tell your mom.
Best. Mom. EVER is Jessica. Jessica has seven kids and is an awesome cook. She calls herself a mess, but she's actually rocking everything she is. If you see a Best. Mom. EVER, know that's one amazing woman(and mom of course).
Jimmy Neutron: Wow, Jessica can really cook. Woah, one...two...three...four...five...six...seven- holy! Seven kids! She is rocking it. YAS QUEEN!
Miranda Lambert: Yee yee, indeed. She is one Best. Mom. EVER
Rob's mom, who resides in Winooski, is the hottest piece o' ass in Winooski. As the butt of 'rob's mom' brand jokes, one must take a suggestive or euphemistic line in a conversation and immediately append the phrase "that's what rob's mom said" because Rob's mom totally gave it up to Malkovsky.
Sexxy Nate: "Hey Rob, did you really go to the deep south for love?"