He was trying to make a joke with his press buddies by mocking a common enemy, the Reagans... I just saw it - he was trying to be funny. Instead he was tacky.
That sort of thing is not something a President-Elect should be doing at his first press conference. He needs to act presidential.
Coming from a man who wants to talk to I'm a dinner jacket face to face. I hope he disrespects Putins mama like this he will bitch slap him!