WTH just happened??? I let my toddler smack my keyboard and now whenever typing a yet to be understood collection of keys, I trigger some sort of typing script that slowly types out things like

TIL. Years.

... over the course of ten seconds.

The strings it types are defined by the respective hotkey and the script competes with me typing other stuff. I don't directly recognize any of the strings but my toddler didn't come up with those neither.

How did that happen and how can I switch it off?