General term for well meaning but unreliable person, often intelligent but prone to lapses in concentration and brain function.
I see Andy is late getting to the pub again?
I doubt he'll show up, you know what a bulb he is.
The condition experienced by tradesmen e.g. electricians, whose constant bending, climbing ladders etc, combined with an overly hairy butt area leads to a mass of matted hair around the ring piece and cheeks. Can lead to problems with poop clinging them, becoming a 'rectal rasta'
"Dude, did you see Willy's ass-dreads poking out of his raggedy tracky bottoms?"
"Yeah I know, they are gross, I think he has to get his Mrs to trim them"