What is Sloner?
1.
A boner aquired while sleeping. A sleep boner.
Guy 1: Hey man I had such a sloner last night
Guy 2: Why man what were you dreaming about?
Guy 1: Your mom dawg.
See
2.
someone who only smokes weed alone
mainly because of extreme paranoia and social anxiety
they may also just want to escape reality and be in their own world
swim: for someone whos buys plenty of weed iv never seen you stoned
leo: i told you already im a muthafuckin sloner!
swim:...wheres my cash?
leo: alright lets smoke
See