Piggy, drunk, top off bottle, rolling around on floor of lounge? (6,3)
I believe the answer is:
little toe
'piggy drunk' is the definition.
The definition suggests a singular noun which matches the answer.
'top off bottle rolling around on floor of lounge?' is the wordplay.
'top off' means to remove the first letter.
'rolling around' indicates anagramming the letters.
'on' is an insertion indicator.
'floor of lounge?' becomes 'lite' (I am not sure about this - if you are sure you should believe this answer much more).
'bottle' with its initial letter removed is 'ottle'.
'ottle' with letters rearranged gives 'tleto'.
'tleto' inserted inside 'lite' is 'LITTLE TOE'.
Can you help me to learn more?
(Other definitions for little toe that I've seen before include "smallest digit" , "Lower extremity" , "Tiniest foot digit" , "Small digit" .)