You can indicate someone is crazy by making a fist with your right hand, holding it to the side of your head and rotating your hand forward quickly once.
Slovaks tend to queue up orderly whenever a line is needed with no jumping the queue.
Be prepared to remove your shoes when entering any home. Usually, slippers are provided. If you are a guest, you will be fed lavishly and encouraged to keep eating/drinking.
When drinking, it is important to look everyone at the table in the eye as you clink glasses, and say "Nazdravie" (to your health!).
