Poses while eating Special K (4)
I believe the answer is:
asks
'poses' is the definition.
(as in posing or asking a question)
'while eating special k' is the wordplay.
'while' becomes 'as' (eg 'while I walked' means 'as I walked').
'eating' indicates putting letters inside.
'special' becomes 'S' (common abbreviation as in Special Air Service).
's'+'k'='sk'
'as' going around 'sk' is 'ASKS'.
(Other definitions for asks that I've seen before include "is curious" , "Puts a query" , "Solicits" , "Poses a question" , "Questions" .)