I need your help. A mom needs to know...

It means he smoked a joint.

as in what?

Jack***? -- serious

Jerk?--not very serious

A joint or "marijuana cigarette". Sorry boy xD... busted!!

It means he smoked a joint.

xpmonster

j-bomb is a joint, or marijuana...

It's that or 2 other more unlikely definitions:

*A Black jewish person* or *When you're scanning through radio stations and you're not sure if you've stumbled upon a christian station, the J-bomb is what you listen for in order to tell.*

all of them were from urban dictionary..

Sorry, I really have no clue.. but shearching on google
I found this:

Definitions:

1- When you're scanning through radio stations and you're not sure if you've stumbled upon a christian station, the Jbomb is what you listen for in order to tell.

2- A joint or "marijuana cigarette"

"Let's go smoke a JBomb!"

3- A Jewish black person.

"is dat da Jbomb we saw last week...wats dat thing on his head"

And don'T worry about being out of the loop, I'm 23 and I know nothing of the slang teens use.

Here. It can have multiple meanings.

Never heard it before.