Jean Bag! Cut of the legs of the jeans 3 inches from the crotch. Flip the jeans insideout. Sew the bottom. Take an old belt an put it through the belt holes on the jeans. Sew on buttons to decorate!...
Erm... I don't know about the top four most popular sports, but I think that the number 1 most popular would be soccer. (football for those of you in other countries....)