Among the silliest of false statements (4)
I believe the answer is:
lies
'false statements' is the definition.
(lie is a kind of false statement)
'among the silliest of' is the wordplay.
'among' says the answer is hidden in the clue.
'LIES' is hidden within 'silliest of'.
(Other definitions for lies that I've seen before include "Wallows" , "Reclines" , "Deceits; is" , "Untruths" , "Tall stories" .)