Q: If I do something that allows me to steal or swap a Creeper, can someone play the Surprise Not My/Your Problem to prevent me from getting the Creeper?

…Someone used “Steal Something” to take a Creeper, which would have allowed them to win. Another player used the Surprise Not Your Problem which works when someone “Draws or Receives” a Creeper. The first player argued that they didn’t “receive it,” they “took” it. We argued that nobody ever “Receives” a card, by the wording on every card it is just placed or put in front of you. So if “Steal Something” takes a card from one player and places it in front of you, you have received that card.

A: You are correct: when we say “draw or receive” a card, we are referring to any & all game actions, which could result in you gaining the card. This includes stealing it as well as being given it by another player or a randomizing game action. So, yes, Not My/Your Problem can be played to stop a player from gaining a particular Creeper.