Wiki.... "Haggis is a savoury pudding containing sheep's pluck (heart, liver and lungs); minced with onion, oatmeal, suet, spices, and salt, mixed with stock, and traditionally encased in the animal's stomach and simmered for approximately three hours."

OH! I thought it contained kidney also. I just might enjoy Haggis. But, I can't figure out a joke from it.

Hmmmm... if you made it from horse, would it be Naggis?

See what I mean?