Green’s Dictionary of Slang

(US campus) an unathletic individual, as defined by those who pursue sports; lit. non-athletic regular/random person.

2010		Urban Dict. 31 Oct. 🌐 NARP Acronym for Non-Athletic Regular Person. Your schools lacrosse team probably shouts it at you while you walk by.
2016		C. Eble (ed.) UNC-CH Campus Sl. Spring 2016.