i put this [sierra club] guilt sticker on my notebook because i thought the wolf was cool
a [guilt] [sticker] (or usually a packet of them) is included in [non-profit] promotional mailings designed to make the recipient feel guilty in the event that he/she does not donate
"i put this [sierra club] guilt sticker on my notebook because i thought the wolf was cool" What is the definition of "guilt sticker"?