HardMedium Riddle
Perfect with a head, perfect without a head; Perfect with a tail, perfect without a tail; Perfect with either, neither, or both.
Riddle
Perfect with a head, perfect without a head; Perfect with a tail, perfect without a tail; Perfect with either, neither, or both.
Choose an answer
A.A coin
B.An egg
C.A hairpiece
D.A wig
Hint: It's a 2-word phrase with 4 letters, starting with "A".
Answer
A wig
Why this is the answer
The source's answer likely alludes to historical wigs, some styled with a tail (queue) and some without, and worn as full head-coverings or partial hairpieces -- a fairly obscure, loose fit compared to most riddles here.
This riddle is filed under Hard/Difficult Riddles and rated Hard.