Goof Balls

1 14-oz. can sweetened condensed milk

1 lb. confectioners sugar

1 14-oz. pkg. coconut

2 C chopped pecans

20 1-oz. square semisweet chocolate

1 T shortening

Mix milk, sugar, coconut and nuts in bowl. Cover and chill 3 hours or longer. Roll into balls using 1 t mixture for each. Put balls on baking sheet and chill 8 hours or longer. Line baking sheet with wax paper. Melt chocolate and shortening in top of double boiler. Remove from heat. Drop balls into chocolate mixture one at a time. Put on prepared baking sheet. Put into refrigerator for chocolate to harden.