"Don Lemon is a lightweight — dumb as a rock," Trump tweeted, praising former Secret Service agent and Florida Republican congressional candidate Dan Bongino for defending him on the network the previous night.

.@dbongino You were fantastic in defending both the Second Amendment and me last night on @CNN. Don Lemon is a lightweight - dumb as a rock — Donald J. Trump (@realDonaldTrump) August 10, 2016

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Bongino, who said he's backing Trump but is not a "Trump surrogate," defended the GOP nominee amid backlash over the businessman's comment that "Second Amendment people" could stop Clinton, his Democratic rival.

"It's clear he's trying to motivate people to go out and vote based on the potential for an open Supreme Court seat," Bongino argued during his CNN appearance Tuesday night.

Bongino then accused Lemon of having a preconceived idea that Trump was calling for violence, saying the CNN anchor "didn't come into this with a clear and open mind."

“What you’re saying right now makes no sense," Lemon told the guest.