Wanting to have sex with another human being and not being a twat about it.

Hit that. Tap that. Smash that. Break that. - Why can't they use "I'd like to put my penis in her".

It would make being hit on much more funny. Instead of the twists and turns and the "Is he flirting?" "Is she flirting" much more bearable.

Imagine:

 "At some time this evening after our brief encounter I would like to put my penis in you, is that ok?"
-- "No, I am engaged to be married and only have love in my life for one penis, thank you for asking though"

Or for the 'interested in you' response:

"Oh yes, I would like very much for your penis to enter into my vagina, thank you for being so polite and direct and not being a sleaze ball by describing sexual activity as something painful and harmful when actually, it's quite fun".