“Que buen momo” is a Spanish internet reaction phrase that spread through meme pages, short edits and chat reposts as a way to comment on jokes with layered irony. Rather than sounding formal, it reflects casual online slang where “momo” stands in for “meme.” Its staying power comes from how flexible it is: people use it sincerely for dumb jokes, or sarcastically when a post is painfully unfunny. It fits neatly alongside other quick reaction clips like bruh in fast meme editing.