The most recent being the jeans trend. It was funny, I get why everyone enjoys a good shitpost. Some of the shitpost are top quality and fun for all to enjoy. But after a couple of days the shitposts just turn to shit posts and its just upvote farming low quality content and kills the joke.
Yeah, the cycle lasts maybe a week or so, it can last longer or shorter depending on how much the meme evolves as it bounces around different groups. Sometimes it only lasts for like a day or two, sometimes it just builds and builds over time and lasts for what like, two weeks, or even lays dormant for awhile before it pops back up again and lasts for another cycle. And some get inducted into the Meme Hall of Fame and continue on for years and years after the fact.