Surname of the brothers at the centre of John Sullivan's best-known sitcom (7)
I believe the answer is:
trotter
But I can't explain it at all! Could you help me understand?
(Other definitions for trotter that I've seen before include "bit of a swine" , "Food for man" , "Pig's paw" , "bit of a pig" , "A slow runner or a pig's foot" .)