Rudy Giuliani can't seem to remember the most important lesson in showbiz: the camera is China Archivesalways watching.

Prior to the third presidential debate, Giuliani engaged in a face-off on CNN with Clinton surrogate Mark Cuban. Halfway through the conversation, Giuliani grabbed reporter Erin Burnett's wrist, and left it there until he finished his comment.

It's not uncommon for people to touch other people while making a point, but it's not okay unless that touch was invited.

Here's video of the incident.

Aaaand for the close-up.

#Debate pic.twitter.com/b9twxResFp

— Vic Berger IV (@VicBergerIV) October 19, 2016

Giuliani has been one of Trump's loudest surrogates in the past few weeks. He argued that the Access Hollywoodvideo was just locker room talk and said that he "believed Trump" and his denials of recent serial allegations of sexual assault.

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