The pathogenesis of ectopic gastric mucosa is a matter of debate between a congenital-embryological-and an acquired origin-consecutive to a gastroesophageal reflux (GER) like Barrett's esophagus -, the most commonly accepted theory being that these areas are embryological remnants.
Standard size latex filled helium balloons stay afloat for approx 8 - 12 hours, metallic helium filled balloons float for 2-5 days. I have found that a 36 latex helium filled balloon can stay afloat for a number of days due to the thickness of the balloon and the massive quantity of helium.
Tips. 1  For added fun, you could also sit on a balloon to pop it. 2  Concentrate this spot on your balloon for 3-20 seconds. 3  You should be able to quickly and impressively burst your balloon. 4  A lot of women have long nails which they can use to burst balloons.