A fin bro is a finance bro. They work in finance and that is their only personality.
Jake: Ethan is going to study Finance.
Sully: OH? Ethan is going to be a fin bro.
by urmomceline September 21, 2023
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Destroy the fins on someones surfboard. Specifically if that someone is ruining your surf and not a native.

Originated from bloodborn Aussie's living off the Gold Coast.
These beta cucks just dropped in on our swell. They better have 2nd generation grandparents from the Gold Coast, or we'll punch their fins out.
by XXXandBEER September 8, 2021
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To pop fins on someone is to shut down that person's ability to remain in a situation, particularly a fight or argument. The name comes from the method of popping the fins off a dickhead's surfboard, while out in the water, so he can't surf and has to paddle back in.
If this guy doesn't chill the fuck out, Chris and Jefferson are going to pop fins on him and send him on his way.
by Otian August 30, 2015
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To be alone with a couple.
If there is more than one couple you are double finned
Noun: The Finn

I got finned by Mary and Tom today. It was so weird - they made out the whole time.
by laserkaktuss July 25, 2018
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fin is very swag, very swag indeed
i think that fin is swag
by k3nmqz April 2, 2021
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An individual who creates a bruh moment VERY frequently. They are usually dumb people in general, and still say "pisghetti" and "aminal". This word is also used against somebody who thinks mayonnaise is spicy.
by The Man Wilhelm All Sacks. October 23, 2019
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