Delaware Code
Subchapter II. Statute of Frauds and Perjuries
§ 2712. Promise to pay debt of another under $5.

All promises and assumptions, whereby any person undertakes to answer, or pay, for the default, debt, or miscarriage, of another, any sum under $5.00, being proved by the oath or affirmation of the persons to whom such promise and assumption are made, are good and available in law to charge the party making such promise or assumption.