Suddenly gets angry in front of sexy picture (8)
I believe the answer is:
snapshot
'picture' is the definition.
(I know that picture can be written as snapshot)
'suddenly gets angry in front of sexy' is the wordplay.
'suddenly gets angry' becomes 'snaps' (I can't justify this - if you can you should give a lot more credence to this answer).
'in front of' says to put letters next to each other.
'sexy' becomes 'hot' (similar in meaning).
'snaps'+'hot'='SNAPSHOT'
Can you help me to learn more?
(Other definitions for snapshot that I've seen before include "Casual photograph" , "Instant record of an event" , "Informal photograph" , "Bit of camerawork" , "print" .)