Someone says, I have a Business Opportunity for you. What are your immediate thought?

"Bugger off."

I back away very slowly.

"Ok. I'll bite."

Undercover narc cop! Lol!

My first thought would be "where is my wallet?", second thought "where did I park?"

I'd do what Hippy would do -- only faster.

I like messing with people, especially when bored and in need of cheap entertainment. So, I'd listen, and take them and their business proposal apart, piece by piece.

Don't make eye contact, back away

I would tell them to take off ! I'm done with business deals. I would think right off that it was a scam.