Shocked by the sudden disappearing of your clothes, your natural reaction is to try and cover up your private parts with your hands.
“Don't be silly. No need to hide anything here. The human body is a thing of beauty and should be admired. There’s nothing to be ashamed of. Nakedness should be embraced. I’ll take my clothes off in time but I want to have some fun with you first.”
“Start stroking your cock for me. I want to see it at it’s fully erect best. Just stare at my heavenly ass and smooth, long legs and get yourself aroused. If you wish to use lube, you may.”