From the English word frat (meaning immature juvenile adult male university student when used pejoratively), + lit as an abbreviation for the English word literature.
"frat-lit." YourDictionary, n.d. Web. 25 May 2018. <http://www.yourdictionary.com/frat-lit>.
frat-lit. (n.d.). Retrieved May 25th, 2018, from http://www.yourdictionary.com/frat-lit