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Short for "Rewrite it in Rust", a phrase used by many people when talking to programmers that use other, more typical programming languages. It usually comes up when they complain about the functionality of issues that they are having with this other language, usually in the lines of Segmentation Faults in C or C++, messy code in JS, Java or C#, or really slow speeds in JS or Python.
Random user on the internet: OMG My code is so slow and doesn't stop seg faulting!!!!
Me: RIIR, you won't regret it.
riir by vicky5124 April 25, 2021
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When something is unexpectedly weird and/or funny. Can also be used to describe a situation. Riir can act as a gasp of surprise or as an adjective for the current situation/thing.
Friend: Hey, have you heard of that girl from the other school that fucks her dog?
Me: Riir! What the fuck.

Or:
Me: Bro, her outfit looks so riir.
riir by Todesritter_99 May 1, 2019
Related Words
If something is very funny/strange/interesting (something like “LOL”/“ROFL”)
Yeah, that’s riir!/Riir!/Haha, riir!
riir by Ren0x April 29, 2019
riirii is a cute tini person who is just amazing to be around. they have one of the most attractive personalities you will ever meet and always will make you feel loved and appreciated. theyre so much fun to be around and are always so easy to talk to. if you dont have a riirii in your life you're truly missing out on what a wonderous person the world has created.
person 1: have you met riirii??
person 2: you mean the 8th wonder of the world? pls ofc i have !
riirii by adri anm February 18, 2021
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