Dind Dong
Her: I'm making Chinese. Me: Cloning's unethical. Hahaha just kidding. Make me a math tutor.
An hour later you're hungry for power.
Ding Dong
Sounds like a pretty shady dude to me.
Someone who knocks on your door at 6 a.m. for no reason.
There's none. They both knock on the door, but never goes in!