out of fashion or obsolete
bell bottom jeans and elevator shoes were considered old hat at one time, but now they're back in style.
by polo June 01, 2005
Get the mug
Get a old hat mug for your brother-in-law Jerry.
Something so well known and established that its practice isn't anything novel or interesting.
Knock knock jokes are rather old hat nowadays.

Picking up girls at clubs is old hat for him.
by tehdang February 14, 2014
Get the mug
Get a old hat mug for your mama Jovana.
Refered to when something has been brought up, or posted on forum multiple times.
"this is such an old hat, find something original"
by Chris February 14, 2005
Get the mug
Get a old hat mug for your daughter Zora.
Vulva or vagina, esp. of a lady the senior side of 35. Popular term in the Victorian era.
Be careful dismounting that boneshaker, Delilah, lest the world and his dog see your old hat.
by Jonny Firepants February 22, 2014
Get the merch
Get the old hat neck gaiter and mug.
I couldn'y find a new one, so I used the old hat from last night.
by Brett Calvin September 30, 2006
Get the mug
Get a old hat mug for your buddy Helena.
someone that is a bit emo. could possibly be a lesbian, due to quirkiness. loves panic at the disco. has never read "where the wild things are", and plays bass for rockband.
That girl Maegan, she's old hat! Just look at her!
by kmania November 15, 2009
Get the mug
Get a old hat mug for your mate Abdul.
An alteration of the term new shoes, meaning to burp.
Fred: (BURP)
Paul: 'old hat!'
by Shaggy April 20, 2005
Get the mug
Get a old hat mug for your dog Nathalie.