Because rolling a 1 is usually bad news, these are the Critical Failure D20 dice made and sold by Etsy seller MarsDice. The 25mm dice have 'F*CK' printed on the side instead of a '1', are available with a silver or gold finish (along with either black or uncolored numbers/letters), and cost $18 apiece. Man, I still remember the first time playing D&D that I rolled a 1 and got my bard character boned by a goblin. "You were begging for that 1." *shrug* I'm an adventurous spirit.
Keep going for a handful more shots.
Thanks to carey, who agrees the 20s should be replaced with 'F*CK YEAH's.