Touching the back of your tongue

No, the under part of your tongue
yeah, that's the one

It's supposed to feel like the tip of a dick

Girl: "Can i touch your dick? uwu"
Boy: "Touch the back of your tongue"
Girl: "......."
Girl: "WOW!!"
Boy: "So what did we learn today?"
Girl: "Touching the back of your tongue feels like dick!"