Christina's Sugar Cookies

1 c butter
2 c sugar
2 t vanilla
2 eggs (note: eggs are optional--they still taste great without them)
5-6 c flour
2 t baking soda
1 t salt
1 c sour cream

Cream butter and sugar. Add eggs and vanilla. Blend dry ingedients with a fork and add wet to dry. Also add sour cream. Wrap in plastic wrap and refrigerate about 1 hour or until firm. Roll dough out to about 1/4 inch think and cut out shapes as desired. Bake at 350 for 10 minutes on an ungreased cookie sheet.