Comic character flipping two eggs (6)
I believe the answer is:
tintin
'comic character' is the definition.
(I've seen this before)
'flipping two eggs' is the wordplay.
'two eggs' can mean two replacements for 'egg'.
'flipping' shows that the letters should be reversed in order.
'egg' becomes 'nit' (a nit is an insect egg).
'egg' becomes 'nit' (a nit is an insect egg).
'nit'+'nit'='nitnit'
'nitnit' reversed gives 'TINTIN'.
(Other definitions for tintin that I've seen before include "cartoon character" , "Herge's adventurer" , "Herge's adventurous young Belgian reporter" , "Herge's cartoon hero" , "Comic character" .)