Did you know that the Matilda part of Waltzing Matilda refers to the swag the tramp carried ie it was a romantic word for his bed-roll if he was doing this riddle he would be singing being with my Matilda helps.

Waltzing means to hit the road. Very few Australians know this, even though they love the song and sing it at the drop of a hat, so Im not surprised if you dont. Im a bit surprised that the OQD made a typo on the B though there never was a William in the picture, as far as I can tell.
Anyways, back to the riddle. To recap - NOTHING we have said so far has been correct. Nil, nix, nada, null, naught.
So heres a different tack
Friendly / unfriendly = a judge,
referee, umpire, assessor (or has the ass been given the boot?)
said to be this = both sides - anagram (udosuk

)
staring you in the face = mirror image
'sounds familiar' = echo (haven't we said that before)
So hows about reflection?