A verb that refers to pranking a friend by changing their background on an electronic device to a creepy looking santa.
The joke, however is that most people will assume the worst when they hear the term, so keep people out of the loop as long as possible in order to keep the joke alive.
Ted: Bro, I hear Roger just got texan santa'd.
Roger (overhearing): Woah, what does that mean?
Ted: Don't worry, you'll find out.