Ketchup does equal happiness to Heinz, as people in this ad in various scenarios (at a wedding, in a hospital bed, by a campfire) hum 鈥淚f you鈥檙e happy and you know it鈥 as they slap ketchup out of traditional glass Heinz bottles. At the end, a grandma looks embarrassed as she squeezes a near-empty plastic bottle of ketchup, only for it to produce a farting sound. Then her granddaughter gives her a glass bottle and she looks relieved to be able to get her favorite condiment the old fashioned way.