I once went on a date with a Danish woman who would offer her dates a "Danish sweet" (salted liquorice) as soon as they were out of range of a trash can, so she could judge them based on their reactions (pretend to like it, spit it to the ground, spit it into their hand until a trash can was available). This generally served her well until she met me, I was so excited I asked if she had any more and she didn't know what to do with that...