A fat spliff / joint / jazz fag / marley cigarette.
From the film withnail and I, with Richard E Grant
Withnail: Who says it's a Camberwell Carrot?
Danny: I do. I invented it in Camberwell, and it looks like a carrot.
That intense feeling of paranoia that you suffer when you're not sure where you stand with a girl you like
ted> dude i really like this chick and it's really eating me up inside
dave> dude you've got syndrome man