The Situation can't dance.
He was one of the lowest-ranking celebs on the Dancing With the Stars premiere Monday night.
The Jersey Shore star (real name: Mike Sorrentino) had only five days of training because he had to finish shooting his hit MTV show. He said his first day of rehearsal was "painful ... I am most worried about not being prepared for my first dance."
And he wasn't.
Of his cha cha, judge Len Goodman said, "I think you've got potential ... you're just under-rehearsed. It lacked polish. You've got the guns, but not the ammunition. Better luck next week." Bruno Tonioli told him, "You're gonna look like a jackass if you carry on like that ... You've got to apply yourself ... This wasn't very good. You have to take this seriously." Carrie Ann Inaba's critique: "You've got to work on the 80s style of dancing."
He and parter Karina Smirnoff walked away with 15 out of 30, tying Margaret Cho and David Hasselhoff for the lowest score of the night.
"I tried my hardest out there," he said, adding that his confidence has been dashed. "I'd like to improve."
The night's other anticipated performer, Bristol Palin, didn't do as bad.
To dance the cha cha, she chose the classic tune "Mama Told Me (Not to Come)," saying that it summed up her relationship with ex-fiance Levi Johnston (father of her baby son). "Mama told me not to do it, but I did it anyway!" she said, referring to her mother, former vice presidential nominee Sarah Palin (who was a no-show at the DWTS broadcast).
When Bristol and partner Mark Ballas hit the dance floor, she quickly tore off her conservative attire to show a sexy red dress that revealed plenty of leg. Judge Goodman told her it was a "very acceptable performance for week one." He said she had "good hip action," but she needs to "loosen up." Tonioli said if she focuses more, she will "get better and better," while Inaba praised her for her "fantastic legs."
She walked away with 16 out of 30 -- tying Brady Bunch mom Florence Henderson and Michael Bolton.
The Hills' Audrina Patridge scored in the middle with 19 out of 30.
The show's early frontrunner: Dirty Dancing alum Jennifer Grey, who moved Inaba to tears (she scored the highest - 24 out of 30).