Project Denneler: What's up, buttercup?

Where does the sentence, 'What's up, buttercup' originate? And more importantly, what does it mean? - Quora

What's Up, Buttercup?

Better Together: Three business owners find synergy - The Tomato

Project Denneler: October 2013

what's up buttercup

Project Denneler: October 2013

What are other greetings like What's up Buttercup? : r/AskReddit

Project Denneler: October 2013

Better Together: Three business owners find synergy - The Tomato