The key for a successful zinger in a Republican primary debate is you have to make sure it is not above a 3rd grade reading level to make sure the audience can understand it.
These, for example are definitely in the no-go zone:
I know that I would say this to Christie:
"You have the tenacity to accuse others of crimes when you as Governor did Bridgegate"
Or
"You have the tenacity to talk about electability when you left office with single digit approvals"
These may be what you would say, but you are not a Republican, now are you? No use of big words like "tenacity."