What to do if feeling like mind is controlled?

So I was playing on a minecraft server and someone told me to message them "corn" I did, and now I feel like my mind is being controlled. Like, even when I'm on twitter, it feels like something is making me do stuff. Is my mind being controlled? Or am I just worrying too much?

Lay off the weed.

Impossible, send them a message saying "uncorn'
You are over thinking which is bad.