Mix cream cheese, shredded Cheddar, and pimentos. Add in mayo, vinegar, and sugar, blending ingredients well. Cover and refrigerate overnight.
Remove from refrigerator, and use 2/3 of the mixture to form the base of the snowman. Then use more cheese to shape his head and add that on to the base. Shape and round the cheese ball, adding in bits of the cheese mixture to fill in gaps and make him look like you want him to look.
Now it's time to decorate. Wash any veggies you'll be using. Chop olives into longer pieces for the eyes; then chop small bits of olives for the mouth. Olives should stick fast to cheese ball with just a tiny bit of pressure. Slice sliver of orange pepper to look like a carrot nose. Then slice red pepper (or whatever color you prefer) into small strips for the scarf; I found that using smaller strips held better to the cheese. Slice top of pepper and remove seeds. Add to top of snowman's head for a hat. Chop ends of 2 olives and use for buttons. Add 2 pretzel sticks for the arms.
Finally, add parsley around snowman for garnish. Serve with crackers, pretzel sticks, or whatever snacks you and your guests may enjoy.
(Disclaimer: Always remember to refrigerate snowman when not enjoying as an appetizer or snack.)