Out to the 5th

Refers to the 5th sandbar. If you look at the lake from the house you will see a series of sandbars. The 5th Sandbar was usually the last one that could be made out (although some members of the family claim to have seen the "27th"). The saying, "Out to the 5th", should be said upon entering Lake Michigan, but always before the final line of "Who do we fight for? Virginia!"