I Don't Shit - You say this when you're too busy being a human version of a

You say this when you're too busy being a human version of a drain to care what someone else thinks.

My crush asked me out. I said, 'I don't shit.'

My teacher told me I was failing. I said, 'I don't shit.'

My friend asked me to help with homework. I said, 'I don't shit.'