Hell Moosie.....if you can remember the backup plans, you should remember your TP but, anyway, here goes:
1.) You and your buddies eat all your candy bars and use the wrappers.
2.) Any paper currency can be used....don't throw it away (unless you have big bucks) wash and dry as soon as possible, or take it home and wash in the clothes washer or dish washer. (Definitely don't let the wife catch you doing this though!)
3.) Tough it out and dump your butt in the first stream you come to. (Drink up stream first!)
4.) If you are a real wussie.....use your hankie.....this can also be washed out and used for the next senior moment.
5.) Cut your shirt tail off and use it. (Don't tell your buddies, they'll tell everyone you know for the next twenty years.
6.) Grab a handfull of grass, forest debtis, etc., and go at it.
7.) Tough it out like a man until you get back to camp or some water!