Description:It's only the third leg of the race, and the teams are already at each other's throats in a new clip from this Sunday's episode of The Amazing Race. During a challenge that involves loading watermelons, Rachel (winner of the last season of "Big Brother") is bent over picking up the heavy fruit with her partner Brendan, when fellow contender Vanessa yells, "Whoa, I can see her [expletive]. I can see her whole [expletive]. Ha ha!" throwing in another, "Ha, ha," in a sing-song voice.(0:36)