a kaj is someone who is so bum sex you want to yell "NUP NUP NUP" or "Sea cu-cu-CUM CUM CUM-ber" or something like that. and he's popular to boot. and all of those ginger's love him. and kaj's are very attracted to gingers too. the end.
ohhhhhh kaj your so bum sex
by KAY-EYE, KADGIE March 26, 2003
4 more definitions
This kid is ninja. Like really. Don't even try it.
Oh shit, it's you, Kaj! I didn't even see you there.
by w00t w00t March 29, 2005
the crevice between the ballsack and the shaft
I dont know how you did it, Kenneth, but you just got your shiny pen stuck in my kaj.
by tap-a-jap February 09, 2010
A common typo for insomniacs in yahoo chats for the popular abbreviation "lol". Especially imbarassing when other typos follow.
gagagagagaga! KAJ! errrrrr.....
by Derek January 08, 2004
a australian guy with the smallest penis in the word
you are sooo kaj, maybe you should go and get a penis enlargement then you might have a chance in life.
by Panda May 20, 2004