That depends on what you mean by "work"... 🤔 For example if someone feels the need to show off their brand new Ferrari everybody will know they value money over everything and have a small something - because, let's face it, it's a guy. If that was what he intended to show then you could say it worked. 🤷
Somehow I never expect a "flex" to be serious... At least among my friends it usually results im a "weird flex but ok" meme because we find the weirdest things to flex about like how many pens you can stick in your ear or whatever. 😅 In that case the intent is humor and it basically always works. 😉