One who has bot qualities. Bot is kind of a “nerd” term so adding the ‘trell suffix makes it more hood. Along with that when someone is acting free or it could be used as a new term for a whore as whores are typically free.
*Dumb pledge trying to tap a keg*
“Ayo man look at that botrell pledge over there!”
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi