It's going viral.
A2It's becoming very popular very quickly online.
It's trending.
A2It's a popular topic on social media right now.
Lots of people are talking about it.
A2Many people are discussing it on social media.
It's all over social media.
A2It's everywhere on social media.
It's a popular hashtag.
A2Many posts are using this specific tag.
People are sharing it.
A2People are posting it on their social media.
It's getting a lot of likes.
A2It's receiving many positive reactions.
It's a popular post.
A2Many people are seeing and interacting with this post.
It's causing a lot of discussion.
A2It's sparking many comments and opinions.
It's a big topic online.
A2It's a widely discussed subject on the internet.
Many people are commenting.
A2Many people are leaving comments on a post.
It's creating buzz.
A2It's generating excitement and interest.
It's gaining popularity.
A2It's becoming more and more popular.
Everyone's talking about it.
A2Almost everybody is discussing it.
It's a meme.
A2It's a humorous image or video that spreads online.
It's a challenge.
A2It's a viral activity people try and share online.
It's getting shared a lot.
A2Many people are reposting or forwarding it.
It's making headlines.
A2It's featured prominently in news reports.
It's quite popular.
A2It has a significant number of views and interactions.
It's the talk of the town.
A2It's the most discussed topic currently.
Going viral
B1Becoming very popular very quickly on social media.
Trending topic
B1A subject that is currently very popular on social media.
Social media craze
B1A temporary but widespread enthusiasm for something on social media.
Online challenge
B1An activity people do and share on social media.