3rd Rock From The Sun star Kristen Johnston shocked the audience at her New York play earlier this week by having a temper tantrum on stage after forgetting her lines. The 40-year-old was starring in The 24 Hour Plays at the American Airlines Theater when she had a mental blank and started swearing profusely. The audience screamed as she shouted, "What the f#*k is my line again? Oh s*#t."

A stagehand tells New York gossip column, PageSix, "She forgot literally every line. She looked mortified at first, but she turned it into a joke, and everyone was loving it."

The actress was taking part in the event in which the short plays are written and rehearsed in just one day.

-Check out Kristen Johnston's Filmography

(This news article provided by World Entertainment News Network)