You see wwh, Poland have history twice as long as USA. We have so many traditions that it is hard to know them all. Even more, I am from central Poland, I don't know traditions from eastern Poland. We have very nice proverb Co wieœ to inna pieœñ ( I am sure a half of population of Poland don't (doesn't?) know this one). It means 'other village other song' (more or less).

I must point that "your" custom is very interesting:)