Ulrika has accused Coolio of sexism after he stormed out of an aerobics class she was leading.

The rapper decided to give up part way through the task, instead standing at the back and heckling the other dancers.

"I don't think the guys respond well to female authority," Ulrika told Michelle and Tina last night.

"Oh yeah, definitely," agreed Tina.

Ulrika said she thinks the task would have unfolded very differently had a male housemate been in charge.

"If Tommy had been taking the class, you know for a fact Coolio wouldn't have walked out," she insisted. "Tommy would've told him to get back in and Coolio would've done it."