“A vast majority of Americans I’ve met say ‘I could care less’ to mean they don’t care. This makes no sense. “Even though I know what it means, taking rain check still makes absolutely no sense to me.” ― Schirin Jungclaus13. According to Hindi language chai means tea. So basically you are saying Tea Tea which is stupid.
Source: Huffington Post May 14, 2018 21:00 UTC