"He shared that when you're sweating and don't have time to take a shower, you just take a baby wipe and rub it under your armpits," Pitt's costar and pal Eli Roth told PEOPLE at Saturday's Spike TV Guys Choice 2009 in Los Angeles, set to air on the cable network June 21 at 10 p.m.
"After a scene, Brad had to get next to me for a close-up shot, and he said, 'Damn, you're ripe,' " recalls Roth, 37. "I said, 'I didn’t have time to shower.' He said, 'Baby wipes, man, baby wipes.' "
When it came to Pitt's pits, Roth said the leading man explained, "I got six kids. All you've got to do is just take them, a couple quick wipes under the pits." Pitt further said, "Man, I'm getting pissed on all day. I don't have time to take a shower."