Patti LuPone is back teaching theater etiquette.
The famously cranky Broadway diva, 73, was caught on camera yelling at a maskless theatergoer after a performance of her hit musical Company on Monday night.
The explosive moment was recorded by another viewer and posted on twitter, where it quickly went viral, racking up more than 200,000 views as of Wednesday morning spawn a series of reposts. (Warning: The video contains profanity.)
“Put your mask over your nose, that’s why you’re in the theater,” LuPone can be heard lecturing the bare-faced patron at the beginning of the 30-second clip.
The two-time Tony winner, who previously battled COVID-19 in February, said afterwards: “It’s the rule. If you don’t want to follow the rule, go away!”
The audience erupted in cheers as LuPone continued, “Who do you think you are? That you don’t respect the people sitting around you!”
The maskless woman in the audience didn’t take LuPone’s dressing lightly, however, and yelled back, “I’m paying your salary!”
“Bulls – t! Chris Harper pays my salary!” the Broadway icon fumed in response, referring to the name of the “Company’s” producer.
LuPone officials declined the Post’s request for comment.
Meanwhile, it’s not the first time LuPone has let her temper get the better of her on stage, starting with the infamous tongue swipe she gave a photographer during a 2009 performance of Stephen Sondheim’s acclaimed Gypsy.
In 2015, in the middle of a performance of “Shows for Days,” LuPone approached a writing theatergoer and snatched his cell phone from his hand.
The stage legend afterwards told Playbill, “We work hard on stage to create a world that is being utterly devastated by a few rude, selfish and inconsiderate viewers controlled by their phones.”
LuPone has built a reputation as a Broadway diva over the decades, even threatening to leave 2002 comedy “Noises Off” after she reportedly suffered a “convulsive hissing fit.”
The actor was fired from his production of Sunset Boulevard by Andrew Lloyd Webber in 1994.
LuPone then sued Lloyd Webber for $1 million and used the funds to build a swimming pool on their Connecticut estate.
The cheeky star dubbed it “The Andrew Lloyd Webber Memorial Pool.”