Language / My American-Polish family says this word all the time! It sounds something like 'shnoodek' [4]

szmondak ? slang expression, not really Polish but imported from jiddish, usual meaning: petty thief or ******* :-)

Law / Polish wife wants me to sign a prenup [7]

It really depends what kind of "pre-nup" (called "intercyza" in Polish) it is going to be. Such agreements are signed in order to modify standard property regime which normally would apply by law to married couples in Poland and would provide for joint ownership of (almost) any property (and joint liability for majority of debts) acquired during marriage. This regime may be modified in various ways. It is a bit complicated and you should really seek legal advice before signing anything but if she is in debt (and this debt probably grows due to an interest) then it is wise to keep separate all property affairs so you do not end with a liability for her debts. Let's say that she is in debt, you get married and then somebody tries to collect the debt from her share of your common property. If you have no common property then the debt may be collected only from her personal property. But as I said earlier, get proper legal advice before signing anything. The law in Poland is very different from the one in England and may sometimes be tricky.

Real Estate / Realistic pricing on estate websites in Poland? [3]

Well, first of all those are asking prices and you should consider them as indicative. It is common to publish offers with inflated prices. Sometimes the difference between what is being asked and what is being actually paid is significant. Be also aware that the same property may be listed by few (or even many) different real estate agents. If you really want to buy something you should shop around and try to find somebody locally to look for best offers. Contacting local estate agents may be a good idea.

BTW - I have checked one of the biggest sites and there are offers well below 500 k: otodom.pl/sprzedaz/dom/lubuskie/