A term for a large spliff (or the pattern of papers for that spliff). The Camberwell carrot was fictionally "invented in Camberwell and looks like a carrot". It originates from a memorable scene in the 1987 cult film film Withnail and I, but has become a British slang term which refers to an apparently unsmokeably large cannabis joint the size of a carrot. Camberwell is a place in London.

Excerpt from the Withnail and I screenplay

Danny starts pulling out rizlas at a prolific rate.

Withnail: What are you going to do with those?

Danny: The joint I am about to roll requires a craftsman and can utilise up to twelve skins. It is called a Camberwell carrot.

Marwood: It's impossible to use twelve papers on one joint.

Danny: It is impossible to roll a Camberwell carrot with anything less.

Withnail: Who says it's a Camberwell carrot?

Danny: I do. I invented it in Camberwell and it looks like a carrot.

Cut to Danny on the sofa. The Camberwell carrot is complete and is indeed of prodigious proportions. As Danny lights it we see only the end but as he hands it to Withnail we see the true size. It is enormous.

Danny: These will tend to make you very high.