When some Iraqi throws a shoe at him, they'll call him Donald, Duck.
The thing that works with Do-over Donald is this: the striking thing about him is the way he expatiates like he's a tough guy on prime time and then withdraws the tough guy message when the air is quieter. If folks pin that to him, it's a huge weapon in any debate.
"Oh Donald, you are talking tough now, but we both know you are going to deny you meant it a few hours from now. Just like you did over punishing women that had abortions. Just like you did when ....[laundry list]"
It invites the observation.