Home / Shop / Birthday / Birthday Motherfucker! Strongest Sperm has been added to your basket. CheckoutView Basket Birthday Motherfucker!$5.00 A6 300GSM Greeting Card with a Coloured C6 Envelope. Blank inside for your personal message. Birthday Motherfucker! quantity Add to basket Category: Birthday Related products Moist Cake $5.00 Add to basket Strongest Sperm $5.00 Add to basket Mum Legend $5.00 Add to basket Escape $5.00 Add to basket