Now, there are times when saying "That's so gay" is entirely accurate and appropriate, for example when a gay man is describing hand making curtains with silk fabric and trim. Or, like when I was watching "Warehouse 14" on Syfy Monday night and Agent Jinks, a gay character on the show, does a double take when seeing the ruby slippers from "The Wizard of Oz" in the warehouse. Most of the time, however, this is not the kind of situation that this phrase is most often muttered.
"That's so gay" has been part of the adolescent lexicon for some time, but a new University of Michigan study has revealed the phrase could have deep consequences for lesbian, gay, bisexual and transgender (LGBT) students.
Source: Huffington Post (Gay Voices), "'That's So Gay' Impact," by Curtis M. Wong