GCB 

Greedy Conniving Bitch or Bastard

She tricked me into giving her all my money, the GCB!

GCB by Markness February 17, 2012

GCB 

Good Christian Bitch

A person with a good, Christian facade, when in fact she is a bitch/partier.

Samantha called Jane a conniving bitch and offered to pray for her. What a GCB.

GCB by shanynanigans November 3, 2012

GCB 

Generic Cover Band. Any cover band that plays generic rock and popular music.

Sounds like Sweet Child O' Mine. Must be a GCB.

GCB by TheDean July 7, 2010

GCB 

Goodbye Cruel Board (noun):
A thread posted in which the thread starter announces they are leaving and never coming back so that everyone will feel obligated to beg them to stay and give their self esteem a boost. The person has no intention of leaving and really just desires a thread or two of pampering.

Hey everyone, QT just posted a GCB! Do you suppose she means it this time?

GCB by BloodyMary June 25, 2004

GCB 

good christian boy

Justin's Jesus tat is awesome. He is SUCH a GCB

GCB by bquigley January 7, 2012

GCB 

GEOGRAPHICALLY COCK BLOCKED

That guy is stunning but he lives 3000 miles from me
The fucking GCB always getting in my way

GCB by mia.dancer September 7, 2021

GCB 

A gender confused boy
1.) has more girl friends then guys( and not because he is big pimping

2.) does not understand what there penis is for

3.) having feminine ways ie. working at craft stores wearing excessive amounts of AE, Hollister

4.) having high voices and low levels of testosterone

take a lap or two around the mall for prime examples of a GCB

GCB by Mgordon March 31, 2009