so dinosaurs 

An expression used to state how old something is.

My grandma is so dinosaurs.

That house is so dinosaurs.

Friend: Wow, this book is so old it's falling apart!
Me: Yea, it is so dinosaurs.

so dinosaurs by MC B-FLOP January 5, 2010

So Dinosaur 

Describes an antique like product of any sort, such as someone elderly, elderly people posessions, or just some old shit you found somewhere. I dunno.

Maaaaan dat G-string is so dinosaur Grandma!

So Dinosaur by Zigabub April 5, 2014

that one is so old i fell off my dinosaur 

a comeback.

for e.g.

P: your lame
M: your mom is lame
P: that one is so old i fell off my dinosaur

that one is so old i fell off my dinosaur by zanethecamel April 13, 2011