The actual original OVER 9000 video is still very funny to me, but people actually saying the quote or saying that something is actually over 9000 itself is very, very painful to me. A lot of jokes are like that with me, really. I can still giggle at the whole ALL YOUR BASE thing, even after like a decade or two, but any references to it are just painful and at this point just come off like a grandpa trying to be hip with this dang old internet thing.
Really, much like Portal jokes, Zero Wing's bad translation is perfectly amusing within context but saying any of the lines outside of its original context generally leads to groans. All Your Base jokes and "A winner is you!" jokes are pretty much token "video game script writers trying to be cool and appeal to their userbase" jokes. Like, even fucking Mario and Pokemon reference those now.