What's with the soap?

Norma:
[after sex]
Pooky... it's no big deal. [raspberries King] Norma:
It happens to everyone... men, mean. We're lucky... women, I mean... we can fake it if we have to. [King glares at her] Norma:
Oh, oh, don't get me wrong... I never have with you! Faked it, I mean. With you it's like... pow, pow, pow, like the fourth of July, every time! But just tonight, cause you couldn't... up to now, it's been grand, Pooky, really, really grand, but if there's one thing I know for sure, you can't let it get you, you should excuse the expression, down. You can't think about it, you just gotta put it out of your mind! The more you think about it, The more you worry. The more you worry, The more you think, [starts eating chocolates] Norma:
think, worry, worry, think... mm! too soft... It just gets like a vicious cycle! And then, before you know it, you are impudent! [impotent] Norma:
[King walks into the bathroom irritatedly and comes out holding something white] Norma:
What's with the soap?