Jim

Welsh slang for "spliff"

Daf: "Hey Alan, up for a Jim??"
Alan: "Oooh I dunno about tonight, maybe we can have a gym sesh another day?"
Daf: "Ahh fairs that's OK"
Alan: "I wouldn't mind coming over for a spliff tho!"
Daf: "Ffs Alan, Jim means spliff"

"Babes you up for rolling us a phat Jim?"