Tease in slapstick ideology (3)
I believe the answer is:
'tease' is the definition.
(kid can mean to tease or joke)
'in slapstick ideology' is the wordplay.
'in' says the answer is hidden in the clue.
'KID' is hidden within 'slapstick ideology'.
(Other definitions for kid that I've seen before include "Suede" , "A baby goat or informal child" , "Rib" , "Jest" , "Sort of gloves" .)