Schmear chocolate frosting on the rim the milkshake glass. Schmear peanut butter on top of the chocolate frosting. Roll the rim of the glass in M&M’s. Put a little spoonful of peanut butter on the back of a mini PB cup and stick 5 of them around the top of the glass. Drizzle chocolate fudge in the glass and fill the glass with the blended milkshake. Top with whipped cream. Then stick in a couple of pretzel rods, a M&M chocolate covered pretzel, and drizzle with chocolate syrup and salted caramel. Repeat with the other 3 glasses!