What is lamb-bhuna?

A massive bifta. At least a king skin rolled with some potent Ganga, for a rainy day when you're run of the mill bhuna just won't suffice.

'Boys I've had a rough day, how about we light up a lamb-bhuna and let all this blow over'

'Fuck me, roll me a lamb-bhuna or I'll start swinging'

lamb-bhuna - meme gif