Sean Hannity’s guilty of breaking the golden rule: Puff, puff, put down the e-cig before coming back from commercial break, damn it!!! But, at least it created this priceless moment.

Not since the election has the Fox News anchor been this shocked — looks like Sean was chilling, vaping and reading something during a commercial break of his show Thursday night. Typically, someone would give him at least a 5-second heads-up before coming back live to the studio.

You can tell, Sean totally missed the warning, and then — looking like a teen caught in his parents’ liquor cabinet — made a poor attempt to hide the evidence. All you could hear for 5 seconds was the stage manager loud whispering, “Sean!” … trying to get his attention.

He recovered, but the worst part had to be taking some crap from Laura Ingraham when his show wrapped, and hers began.