just found out you probably shouldn't be spending your $2 bills lol. apparently some of these are worth way more than face value to collectors? like if you've got older ones from the 1800s or even those 1976 bicentennial ones with weird serial numbers, people will actually pay hundreds for them. wild right. so yeah, the question of whether you can use 2 dollar bills—technically yes, they're legal tender—but maybe don't just hand them over to the cashier without checking first. plus there's the whole sentimental thing. a lot of people keep them as good luck charms or because they got them as gifts. the fewer that actually circulate, the rarer they stay, which keeps the value up for the ones collectors want. apparently the treasury still prints them but not much, so they might get even more valuable later? anyway if you find any lying around, might be worth googling the serial number before you use them. could literally be leaving money on the table