Ind. Code § 28-1-26.5-1

Sec. 1. When, in case of any loan or sale made by any seller, creditor or secured party, the borrower, or any other person furnishing security on behalf of the borrower, shall, as an inducement to the seller, creditor or secured party to make the loan or sale, represent to it, in writing, that he or she is eighteen (18) years of age or older, whereas in fact such person or persons are under the age of eighteen (18) years, or shall otherwise make any false statement or representation to the seller, creditor or secured party and the seller, creditor or secured party is thereby deceived, and the loan or sale is made in reliance upon such representation, neither the person so representing, nor any one in his or her behalf, nor any person otherwise legally liable to pay such loan or sale, shall afterwards be allowed, as against such seller, creditor or secured party, to take advantage of the fact that the person making the representation was under eighteen (18) years of age, but each such person shall be estopped by such representation.