A boring, mood killing, anti-fun, not funny person
(it is also a Korean word: 노잼)
Person 1: *tells joke*
Person 2: *doesn't get and/or doesn't find it funny*
Person 1: AHH ur such a nojam
A boring, no fun, mood-killer, anti-fun person
Person 1: OMG that's so funny
Person 2: Eh not really
Person 1: Ahhh ur such a nojam
