I know of the phrase This ain’t your [family member]’s X, but I’m not sure where it came from and who the family member should be. Your grandma? Your daddy? Your granddaddy? I decided to do a quick Duck Duck Go search on some of these that sounded natural. Take what you will from the search results.
“this ain’t your daddy’s”
this ain’t your daddy’s big band
this ain’t your daddy’s Eagles
this ain’t your daddy’s !Q
these ain’t your daddy’s “This ain’t your daddy’s” jokes
“this ain’t your mama’s”
this ain’t your mama’s peach pie recipe
this ain’t your mama (church)’s church
this ain’t your mama’s recipe
“this ain’t your grandma’s”
this ain’t your grandma’s artwork
this ain’t your grandma’s ‘dick’
this ain’t your grandma’s teddy bear
this ain’t your grandma’s postum
this ain’t your grandma’s soap anymore – or is it?
this ain’t your grandma’s bingo
this ain’t your grandma’s SETI
“this ain’t your grandpa’s”
this ain’t your grandpa’s AR-15
this ain’t your grandpa’s DHEA
this ain’t your grandpa’s ceramic bong
this ain’t your grandpa’s laptop
this ain’t your grandpa’s AKIDO
this ain’t your grandpa’s sex toy
If anyone knows where this phrase comes from, please leave a comment below. The OED has an example of it from 2000 under the entry for hot-rodding (“This ain’t your granddad’s classic car book.”), but it must be older than that. COHA has hits for “this ain’t your”, but none followed by a word for a family member. Google Ngrams is no help (surprise!). Each of my searches used a parent or grandparent, so I guess the family member referred to has to be one that is necessarily older in order for the phrase to sound natural. But I bet variations could be used depending on what the “thing” is – “This ain’t your kid’s cartoon” could be used for animated shows and movies that are aimed strictly at adults, such as Big Mouth and Sausage Party. But what sounds natural to you?