A word for a very good/wonderful lesbian that you know. Combination of the french word, "Tres Bien" (very good), and the word "Lesbian".
( Lesbian friend/Girlfriend finishes off her list of accomplishments for the day)
(You): "Wow, that's fantastic! You are positively, what i'd call, a "Tresbian"!
(LF/GF): (sighs but giggles)
-z0mg, Becky, lyk I totally hooked up with Mitzi last night.
-The tranny? But wait, shouldn't she be into guys?
-Way to perpetuate rigid gender binaries. She's a tresbian!