The best kind of sister there is. The kind of person who finishes all the sentences you didn't even know you started, and gets sympathy sickness with you. Thirza's are also great because they know the rules of the game, and have the same horrible thoughts as you
Im so glad I have my own Thirza, I'd be so sad without one...
by mooface September 30, 2006
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Men want her, women want to be her. She's perfect and wonderful and never does anything wrong. Delightful af and tremendously funny. when she misspells a word...that becomes the new spelling of that word. strengths; generosity, kind words, positive vibes, karate. weaknesses; Thistle thistle thistle.
guy 1: That's the most perfect and wonderful girl I've ever seen.
guy 2: Yeah, a total Thirza.
by Lotty Da April 26, 2023
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