Actually I would not take any money in such circumstances either. Lots of scams are based on somehow giving a person money and then emotionally assaulting him based on the fact that money were accepted. One of the rules of survival in prison, some army units etc... (dpending on country obviously) is to not owe anything to anyone. I'd say refusing gifts from strangers is a perfectly viable survival stratagem.

See one of the latest Burn Notice episodes (season6, ep 3-4 ish) for confirmation if you do not believe me.

Timeo Danaos et dona ferentes ->  "Beware of Greeks bearing gifts"

Troyan horse attacks are possible and are are happening not only in Information Security context but in context of street level survival as well. What you see in that video is people intuitively defending themselves from a potential trojan horse attack.

If only bitcoiners were as streets smart as those random people in that video, Pirate ponzi would be done and dusted long ago...