Mendes once challenged Diaz to a farting competition!

London, Jan 24 : American actress Eva Mendes revealed how she challenged actress and former fashion model Cameron Diaz to a farting competition.

The two ladies had gone to Nepal for an MTV show and Eva confessed how they had stayed up all night in their hotel room breaking wind.

Eva recalled how she challenged Cameron to a farting and belching competition.

"Cameron is a big old belcher, but I can't belch," the Sun quoted Eva as saying.

"One night I had a heavy dinner, so I combated her belching with something I could do. We were in side-by-side beds, so it was her disgusting bodily function versus mine," she said.

"It was an Eva-Cameron fart-belch off," she added.

ANI