Pranks which play on expectation and perception can be awesome, as this particular prank proves.
You’re being offered some coke or a little pot, so you’re going to assume the worst. You shouldn’t, it’s all innocent, good fun, and, most importantly, perfectly legal.
The guys behind this prank have balls of steel. I couldn’t approach a random stranger in the street and start talking about a little pot I may have in my bag. Even though “a little pot” refers to an actual little pot.
Some of the reactions are priceless, especially the guy who was sat on the bench overhearing the conversation. He was ready to move away without looking back until he caught sight of what the guys were talking about.