He posted "tmu".
https://twitter.com/j_hancock34/status/1847676492458930325
Probably means "turn me up". So what does that mean?
"Well lately, it's been heavily related to engagement on social media. When a social media user posts a new video on their preferred platform, they may ask their followers to "TMU," which typically means that they want their followers to engage with the video and help it become popular."