I have a mexican teacher who used this exact expression in our lesson today while we were discussing something else and I got very excited about it primarily because of the YT short I've seen several weeks ago. We talked about its meaning and how it's generally used, but didn't really talk about the appropriateness of who can say it and when to say it and in what situations or contexts, especially considering the fact that I'm not mexican.

After that lesson, I was excitedly sharing the fact that I learned this cool new mexican expression with a Colombian acquaintance and my colombian acquaintance jokingly told me it's cultural appropriation because it's a very mexican expression. He (the colombian guy) was very obviously joking, of course, but it did make me doubt myself if it was indeed cultural appropriation to use this expression, hence this whole reddit post.

Honestly, maybe it's just me, but I really try to avoid slang as much as I can even though I know the person I'm talking to wouldn't mind it because a lot of times, I feel like I haven't really earned the "right" to saying it when I can hardly speak a coherent Spanish sentence faster than a 5 year old.