Good idea: People should be free to exercise discretion.
@Alk: use your imagination. Yes, even for that.
Leaving a little "thank you" present on some schmuck's front doorstep suitably matching the disfavor they have done for you.
"I wasn't counting cards, I was cheating."
"Ugh. you give me hives."
"It's Tee-revor time!!!"