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?
The question is rude in this context. It’s not rude to completely ignore rude questions.
Your rationalization sounds like some self centered manipulative bullying bullshit.