"Crack Bam Dot" Patch Hat Crack. Bam. Dot. If you know, you know. And if you don't — pull up a chair, the tiles are already shuffled. For the mahjong obsessed, the Tuesday night regulars, and everyone who takes their seat at the table very, very seriously. Details: "Crack Bam Dot" graphic available on your hat of choice Customizable — select your preferred hat style at checkout Perfect for girls night in or planned mahjong parties One size fits most with snapback closure