Cart “Gas Happens” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal Gas Happens $9.90 Gas Happens quantity $9.90 Coupon: Apply coupon Update cart You may be interested in… Books That Explain and Inspire Melvin the Magnificent Molar Poster $1.80 Add to cart Parents/Caregivers Be the Boss of Your Own Body In A Jar $9.00 Add to cart Books That Explain and Inspire Melvin the Magnificent Molar $9.00 Add to cart Cart totals Subtotal $9.90 Shipping Flat rate: $6.00 Shipping to MN. Change address Country / region Select a country / region… United States (US) State / County Select an option… AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingArmed Forces (AA)Armed Forces (AE)Armed Forces (AP) City: Postcode / ZIP: Update Tax $0.83 Total $16.73 Proceed to checkout