Just scrape off the warning that says for external use only and chug that shit

I can't tell if that's a joke or another way of saying 'go kill yourself'

It was a joke, drinking shampoo wouldn't kill you and I'd never tell anyone to kill themself. I wouldn't even joke about it. Come to think of it, I can't even think if any way it could be funny. But fair question!

Thanks for the clarification.