WTF Self-Inking Stamp

WTF Self-Inking Stamp

The urge to leave one’s mark on the world is universal, and Knock Knock’s WTF Self-Inking Stamp helps fulfill this desire over and over again – in bold capital letters. This amusing, addictive inker will customise any surface – and make you feel like the powerful (and profane) bureaucrat you’ve always wanted to be.




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