The only catch is that, at 26 and 27, they're hardly senior citizens, and as such don't actually qualify to be members of AARP.

(Click for a larger image)

Obviously, they're not currently eligible, but they're not ones to pass up a good bargain, so they included a check for membership dues along with the following letter:

March 29th, 2007

Dear AARP:

Thank you for your recent invitation to join your organization. We are excited to receive the many benefits that membership provides, including the discounts, health and wellness benefits, and having a voice in Washington and our state capital. We are sure that we will agree with your assessment that "the benefits are worth far more than the dues of only about a dollar a month." Enclosed, please find our post-dated check for one years' worth of dues. We have dated the check for 2031, when we will both be eligible for membership. You have set an excellent example in sending out the membership registration form this early, as postage rates are sure to have risen much higher by that point. We hope that you will appreciate the favor we are doing by returning the registration form before you will have to pay for the extra postage.

Your future members,

Misty and Michael Poush