Actress Anna Faris couldn't wait to finish filming Sacha Baron Cohen's outrageous comedy The Dictator - because the funnyman insisted she grow disgusting armpit hair for her role as an organic grocery store boss.

While Cohen and her co-stars were celebrating at the wrap party, Faris was in the shower hacking off months of unsightly growth.

In a taped interview with TV host Jay Leno, which will appear on his Tonight Show on Friday, the Lost in Translation star reveals, "It took a few months, but I was naive enough to think... 'It's got to be kind of light and cute, wispy,' but it really wasn't. It was revolting. It was long and coarse and black.

"About an hour after we wrapped the last day, I didn't have a party, but it felt like a party for me. I went into the shower, where I had to cut it with scissors, and then it sort of clogged the drain up."

However, she admits she didn't exactly hide the fact she was growing her armpit hair: "It was a great party trick. If I really wanted to shock and gag people, I would show off my armpit hair at parties. It was remarkable."