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 50th Birthday Card When You Reach My Age…You’ll Find That This Is Your Happy Expression! £3.49 Add to basket Another Birthday and Another Year Older Birthday Card £3.49 Add to basket We Shall Fight On The Beaches Animal Humour Greetings Card £3.49 Add to basket