I forgot to add that 잼 actually is jam in Korean whoopsies xD So then if you take out 이 (i) from 재미 (jaemi) it will be 잼 (jaem) Sorry for spam ^^""

Creation*****

That first one is so damn stupid omfg.
재미없어 -> Jaemieobseo -> No fun/You're no fun
재미 -> Jaemi -> Fun -> Jaem sounds like Jams
없어 -> Not there/Lacking of (etc)
Thus the creations of "You got no jams"