Told whoppers (4)
I believe the answer is:
lied
'told whoppers' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lied that I've seen before include "Produced pork pie" , "Told tale" , "German art song" , "Told untruths; song" , "Was economical with the truth" .)