Poor black lad sold nuts (8)
I believe the answer is:
oddballs
'nuts' is the definition.
(I've seen this before)
'poor black lad sold' is the wordplay.
'poor' indicates anagramming the letters.
'black' becomes 'b' (abbreviation as in pencil classifications).
'b'+'lad'+'sold'='bladsold'
'bladsold' with letters rearranged gives 'ODDBALLS'.
(Other definitions for oddballs that I've seen before include "Bad dolls for eccentrics" , "Eccentric types" , "making up half the FA Cup draw?" , "Strange or eccentric people" , "nuts" .)