(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
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When you mess up in the most spontaneous and main-character way, oftentimes being the result of having a room temperance IQ.
"So I dented my phone in an attempt to catch it" "Grace moment"
by Graces_Shoes February 25, 2021
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When you only say "Too bad", "Kill yourself", "That is what I said", "Loser"
Man 1: "Too bad"
Man 2: "That's a Grace Moment"
by godgamer1234 May 19, 2021
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