Commonly used in the modelling/photographer biz, 'GWC' is any poser/creep of any age, with a digital camera pretending to be a pro/semi-pro photographer, usually as a means to get girls naked. With the introduction of digital cameras, GWC's have appeared like an explosion in a toy store.
GWAC's typically steal the work of others and don't have any references.
(GWC is also used often)
"Some GWAC asked me to 'test' for him, what a creep."
"What's with all the GWAC's on OneModelPlace.com and modelmayhem.com, lately?"
"Damn GWAC's are ruining it for the rest of us." - Pro Photographers
"I would've been able to see her better if there weren't so many gwc's in front of me...."
Gwaceful is the most wholesome person you will ever meet. She is always there with a kind hello and a compliment and enjoys cheering people up. She believes everyone is cute or adorable and loves making people smile. She's also not cute.
On the show Torchwood, the relationship between the characters Gwen Cooper and Captain Jack Harkness is known as Gwack(in the style of 'ship names like Spuffy).
This relationship is terrible. seriously, it's so badly conceived. It just doesn't work. Therefore gwack can be used as to describe anything terrible.
It's also a great onomatopoeia for vomiting. Honestly - Gwaaaaaaaaaaaaack. Which Gwack makes people want to do.
A Gwackson, more often used as “pulling a Gwackson” or “doing a Gwackson” is when 2 people who are extremely stupid have the audacity to have unprotected sex, using the pullout method, or when 2 people have sex in the woods, or a public place.
“Bro, he’s so hot, next time I see him I might have to pull a Gwackson”
“Did you hear that Gwen and Jackson did a Gwackson???”