For me it is when companies/services market themselves as donating to XYZ cause if I buy their product. If they want to donate, they should have already done that with the money they have. Asking me to give them profit so that they can donate is so obviously pretentious.
Removed by mod
Next one that comes to the door, I’m telling him he can have $20 if he humanely escorts the Latrodectus Hesperus living in our cupboard out. Let’s see if he has any tricks up his sleeve other than poison.