VIDEO : Jennifer Lawrence Reveals Bradley Cooper Has 'Sweaty Butt'

Jennifer Lawrence says Bradley Cooper "sweats from his butt".
During rehearsal of dance scenes for Silver Linings Playbook Lawrence realized this great phenomenon.
She said, "You know, you've got pit stains everywhere but like his butt would start sweating and I'm like, 'Is your butt sweating before your armpits are sweating?'" But Lawrence admitted the sweatiness was something she didn't mention to Cooper. She said, ""I wanted to keep the sexual chemistry alive. I didn't want to be like, 'Hey, can we talk about your sweaty ass?'"