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(n) When a sexually confused (and ultimately gay) man "tries" having sex with a woman who is his closest friend to determine his sexual orientation, similarly to how, in the sitcom "Will and Grace", Will verifies that he is gay by trying to have sex with Grace.
Bob: Hey Sally, so your best friend Steve is definitely gay?

Sally: Yep, he came over last night, we had some wine, one thing led to another, and... well, let's just say we totally had a will and grace moment... He is definitely gay.
by libertine February 10, 2013