Legend of Tees? It's rubbish (2,4)
I believe the answer is:
my foot
'rubbish' is the definition.
(phrase used to dismiss something as rubbish)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for my foot that I've seen before include "bunk!" , "I've some nails here?" , "rubbish!" , "I just don't believe it!" , "I stand on this" .)