Coupons you give to your
significant other for sexual favors. The coupons are normally non transferable and may be good for "1 Blow job", "1 night of sex", etc. Sex coupons are normally gifted on Birthdays and Christmas. These coupons are rarely honored, unless the issuing party is "
in the mood", and the
expiration date is basically whenever the issuer deems it to be. Sex coupons are normally given when money is tight, and there is an obligation to give some sort of gift for an occasion.
Also referred to as "Ass Rations"