Usually used when referring to something that is somehow affiliated to the east coast. This phrase is also used when referring to a person's actions, an article of clothing, an object, et cetera, and how they relate to east coast stereotypes.
When using the phrase, that's so east coast, usually, you would hear it come from "east coasters" (people who were born on the east coast) or from people who were born on the west coast who think they are as cool and preppy as the east coasters.
When using the phrase, that's so east coast, usually, you would hear it come from "east coasters" (people who were born on the east coast) or from people who were born on the west coast who think they are as cool and preppy as the east coasters.
C: You know what I've been loving recently?
A: What?
C: Pizza! Especially New York style.
A: Oh my God. that's so east coast!
C: I know, right?
A: What?
C: Pizza! Especially New York style.
A: Oh my God. that's so east coast!
C: I know, right?
by imagirlatRLS January 1, 2019

by Tunnelvisioned* July 20, 2023

A bike gang, consisting of middle school faggots located in Lacey Township, NJ. They use the hashtag, #bikelife. You can see them riding around town swerving cars with a Juul in hand. Their leaders are Alex Salgado and Justin Tsarnas. Co-Leaders are Alex Werring and Griff Morris. The initiation for this gang is doing a fat wheelie across the pavilion in Gille Park.
by datnig44 May 1, 2018

by Tunnelvisioned* July 21, 2023

A sex position which consists of holding a girl upside down in a hand stand in the Atlantic ocean while eating her out
See also west coast wash
See also west coast wash
by CarmenTheStripper August 7, 2022

It is non-existent, because there are not a lot of towns on the British East Coast compared to the American East Coast.
Matthew: Jen, what are you doing this summer?
Jen: Going on a road trip around the British East Coast.
Matthew: Are you kidding me? There's no city life there, only fields and the sea.
Jen: Going on a road trip around the British East Coast.
Matthew: Are you kidding me? There's no city life there, only fields and the sea.
by Lighter_Waterfalls June 21, 2021

An extended and over the top birthday celebration common among the upper echelon east coast white girl.
Becky: Are you going to Lisa’s birthday party?
Nicole: I heard she’s flying all her friends to Iceland
Becky: that girl knows how to have an East coast birthday
Nicole: I heard she’s flying all her friends to Iceland
Becky: that girl knows how to have an East coast birthday
by DoctaJFIVE September 23, 2019
