Quoting: Lightbulb
If you want to marry a girl, you send your most socially influential friend or relative to her house with a bottle of vodka to negotiate with her and her parents. If they agree to marriage, they drink a toast with your friend and send him back to you to plan the wedding. If she refuses to marry you, she sends your friend home with a watermelon. Sounds like a good deal to me - either you have a wife or a tasty watermelon to eat. :)
If I ever fall in love in Poland and have to propose I will always remember this post advice... made me laugh :)
I have also read here that divorce rate is very high in P-land so maybe many guys should have took the watermelon and ran.