Nuts on top

Its like a front fruit basket where your nuts are literally over your penis.

When I got out of the shower I surpised my girlfriend with some nuts on top

Nut Topping

The act of placing one's testicles firmly between someone else's breasts, or "topping" the breasts with the "nuts".

Person 1 - "I feel like our sex life has become repetitive, and I want to try something new "
Person 2 - "I've always wanted to try 'nut topping'. It sounds like it would be fun!"

nuts as a noodle top

Someone who is clueless or empty headed.

She's as nuts as a noodle top because she wouldn't give me glue for the glitter.