The phrase in question refers to novelty currency featuring the likeness of the former U.S. President and bearing a numerical denomination of $250. Such items are not legal tender and hold no official monetary value. These are typically produced and sold as commemorative collectibles or gag gifts.
The proliferation of these items speaks to the enduring public interest, both positive and negative, surrounding the individual depicted. The items themselves have no economic significance. Historically, novelty currency has been used for political commentary, fundraising, or simply as a form of personal expression.