You know it’s almost Halloween when the road to the Great Pumpkin Farm in Clarence, N.Y. is backed up with vehicles carrying big -- very big -- pumpkins. The Association of Mature American Citizens [AMAC] reports that Scott Andrusz of Williamsville, NY has a leg up in the competition; his 2,554 pound gourd certainly makes it the biggest in the U.S. thus far. But it’s kind of a lightweight when…