Whipped Topping

The act of jerking off on the toilet while taking a shit so that you cum on a fresh turd cake.

Friend: Are you taking a shit?

You: I was why?

Friend: Well what are you doing now, jerking off?
You: Yeah that's exactly what I'm doing.

Friend: Seriously?

You: Yeah it's called a whipped topping

Don't flush until you've hit it with the whipped topping.