I'm a ladyboy trap and I make a living doing what she is doing at the adult bookstores. When guys leave, they usually rush out leaving the door to the booth open. So I position myself to be on my knees naked and applying a fresh coat of sexy lipstick, so that when guys look in that is what they see! It's such a turn on for me!
But I'd rather have a cock in my mouth and swallow all the cum than have it smeared all over your face... when a guy cums in your mouth, it's better if you keep it all in and swallow it, and it's not wasted.