WATCH: Bush zings Trump with codename

When Republican candidates were asked to choose their Secret Service codenames, former Florida Gov. Jeb Bush quickly jabbed: “Ever-ready. It’s very high energy, Donald,” prodding rival Donald Trump who has criticized Bush for being “low energy” on the campaign trail.

Trump responded, amused, by giving Bush a thumbs up and offering him a high five, Trump’s second of the night, his first given to Ben Carson.

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