Making it Crystal Clear
Is this person asserting their gender as clearly and obviously as possible so people will stop misidentifying them? Or did they just lose a bet with one of their best friends? Either way, this definitely seems like something worthy of a cocked eyebrow while grocery shopping at Walmart.
On the bright side, at least this individual knows that Great Value cereal is by far the best choice for their wallet, so whatever the reason for that sign, they've got real wisdom.