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

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