A drinking fountain, or bubbler if you will.
A pickled condiment made from cabbage and various other vegetables and spices.
When I first moved to the area, this is one of the odd foods I found out about that is a regional favorite. Squeaky cheese is simply a bit of the curd taken out before the rest of the cheese is aged. It squeaks when you eat it. People from 'round these parts take pride in their squeaky cheese.
Milwaukee nickname for a heavy citrus soda, such as squirt or 50/50.