If Ronnie Coleman personally offered me a drink, I'd probably try it without hesititation simply because it's coming from a multi Mr O, and not some 16-year old kid in a GNC collared shirt.
Dorian has about 20 cups there. I am betting the 20 people he personally offered drinks to, all remember that moment to this day. And if even one of them became a lifetime purchaser of his product, then it was well worth it.
It could be worse. He could be running around in a medium T-shirt with syntholed arms, claiming to be a natual freak. Instead, he's personally handing out free samples of a product.