Home / Paw Play / I Fart Because It’s The Only Gas We Can Afford Birthday Card I Fart Because It’s The Only Gas We Can Afford Birthday Card£3.49 Card Size: 5” x 7”. Blank Inside. Envelope Included. Funny Birthday Card. 10 in stock I Fart Because It's The Only Gas We Can Afford Birthday Card quantity Add to basket Related products Another Year Another Christmas Funny Christmas Card £3.49 Add to basket Another Birthday and Another Year Older Birthday Card £3.49 Add to basket Clinging On To Your Youth Birthday Card £3.49 Add to basket Happy Anniversary Card To The PPP Perfect Pair Anniversary Card £3.99 Add to basket