Some random dude walked up to me while I was waiting outside a food place for my food and asked me this question.
I said “no, I dont give out random favors” and something along the lines of that’s sus.
Is it rude to say no to random dude that asks for a favor?
On the contrary, it’d be rude to expect any other answer. Shoving expectations onto a complete stranger and then judging them for firmly denying you is what’s rude here.