I have to say, sordid as this is, this has my curiosity picqued.Nguyen's lawsuit said she could identify a "unique physiological reaction" that Seagal has to sexual arousal, which could be corroborated by the other "attendants." The suit did not specify what that reaction is.
I have an image in my head of that episode of Ugly Americans in which the demon boss sprouts some sort of giant jagged appendage on his chest due to arousal.