President and Superdelegate Jimmy Carter says "it'll be time for Hillary to give it up" when the remaining superdelegates endorse around June 3rd. While hinting at an Obama endorsement during a Sky News Interview Carter stated:
"I'm a superdelegate ... I think a lot of the superdelegates will make a decision quite, announced quite rapidly, after the final primary on June 3."
"I have not yet announced publicly, but I think at that point it will be time for her to give it up," Carter said.

All Carter needs is Marvin Gaye's "got to give it up" playing in the background. I would say Carter's telling Clinton, unless you want the embarrassment of all the Superdelegates' overwhelming support of Obama crushing you June 4, you best get to steppin' Tuesday night, June 3.