Before there was President's Day, we had Washington's Birthday. Here in Washington, sales were for $22 (used) cars, 22 cent typewriters, and other absurd prices with "22" in them. I still have and occasionally use a Leica M3 (used) that I bought for $22 at a camera store's Washington's Birthday sale.
These days, it's just another excuse for advertising mattresses on sale. Sorry, no mistresses on sale.
"We can plainly understand woman was made after man, and she's been after man ever since" - Blind Alfred Reed