The phrase is used to describe a moment where someone almost/completely ruins the mood of a moment in an attempt to appear to be "the cool guy."
Person 1: Hey, do you want to come to my apartment and...
Random Dude: Yeah!!! Fist pumpin' like champs, what now?!?!
Person 1: Wow, dude. Way to be that guy (wtbtg).
homophobic: “The L in Lgbtq stands for lose”
allies: “We put a W for Win to fight homophobia.” Wgbtq.
Lgbtq+ - community of people who identify as anything that’s not cis-gender/heterosexual.
Wgbtq+- those listed people being winners.