Urge what rolls sometimes have (3,2)
I believe the answer is:
egg on
'urge' is the definition.
(to egg someone on is to urge them to do something)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for egg on that I've seen before include "this face is obvious embarrassment" , "'Incite, urge (3,2)'" , "Incite, encourage" , "Push" , "Encourage (someone to do a risky thing)" .)