On last night's Late Show, Stephen Colbert rolled onstage on a Hoverboard and brought a sharp retort to Sarah Palin.

Sharper than the rock she hit her head on earlier this week, even.

But Palin should get writing credit for Colbert's opener, because he read her entire Facebook post verbatim as part of his monologue.

“Now I would chalk that up to head trauma ― if it didn’t sound like everything else she says.”

He then replied in word salad so on-target you would think Palin's Facebook page was backstage.

Watch.