Home / Shop / Birthday / Strongest Sperm Birthday Motherfucker! has been added to your basket. CheckoutView Basket Strongest Sperm$5.00 A6 300GSM Greeting Card with a Coloured C6 Envelope. Blank inside for your personal message. Strongest Sperm quantity Add to basket Categories: Birthday, Friendship, Love and Anniversary Related products Moist Wonderful $5.00 Add to basket Escape $5.00 Add to basket Pull Out $5.00 Add to basket Fat & Drunk $5.00 Add to basket