Originally, to bring up or raise a child (Stewart was
reared by his grandmother). Now: to be taught a lesson in an unforgiving manner in any activity, usually a sport or a video game. Essentially a synonym for "schooled", rear also acts as a double
entendre, hinting that the
schoolee was done in the butt by the schooler-- thus, the lesson was a costly and painful one.
Shit, man! We
reared those 14-year-olds in ball today! I can see why they didn't make the
JV squad!