Q Quidditch- A sport from the wizarding world of Harry Potter which has since been adopted by Ivy league campuses in order to offer an athletic pursuit that computer science majors and satire writers may participate in without fear of taking a high-speed football to the back of the noggin or getting crossed out of one’s shoes by an overly cocky Asian transfer student with a Steph Curry fetish.
'..you never see any grown adults still playing the xylophone..."
There are some adult musicians who play its older brother, the vibraphone, however.