Shuffle along after tango? Rubbish! (7)
I believe the answer is:
twaddle
'rubbish' is the definition.
(I've seen this before)
'shuffle along after tango?' is the wordplay.
'shuffle along' becomes 'waddle' (to waddle is to walk in a shuffling manner).
'after' means one lot of letters go next to another.
'tango?' becomes 'T' (phonetic alphabet: alpha, bravo, charlie etc.).
'waddle' after 't' is 'TWADDLE'.
(Other definitions for twaddle that I've seen before include "Rubbish" , "Bull" , "Senseless talk" , "Poppycock" , "tripe" .)