A cretinous child, given a nickname due to the firstname beginning with "j" e.g.john,james,jason,justin, the j-dawg is usually a snivelling cretin with much abuse directed there way.
" J-Dawg you smell of shit"
"J-Dawg no one likes you"
"Hit J-Dawg with the soap not me"
J-Dawg : "Can I lick your armpit"
Random Guy: "Fuck no J-Dawg you sick cunt"