Related to the musician Rockwell (Kennedy William Gordy) who sang the popular song "Somebody's Watching Me". This term defines the action of someone watching/following a person without their permission, aka stalking. Rockwell can have the suffix -ed or -ing added in certain situations.
Alternate meaning can signify being tricked or fooled by your friend(s), etc.
I met this ugly chick last night at the bar, and she's been Rockwelling me ever since.
Damn son! If you like her that much, just pull a Rockwell.