[hprotagonist]

fag/fagging is probably from the verb form, "to tire out/exhaust" -- ie, underclassmen get to do all the work.

Why the verb "to fag" means what it does seems to be an open question, and doesn't seem to be related to the pile-of-sticks root.

https://www.etymonline.com/word/fag?ref=etymonline_crossrefe...