It must have been really embarassing to find out you've stuck a love note on a random stranger's car. And it might have been one of your neighbors! This cute and extremely polite note is part of a collection called 18 Hilariously Polite Warning Signs which range from passive aggressive to clever to truly polite. Link
(Image source: reddit)
I always laugh thinking about what the owner of that car must have thought if the impression survived the night.