Used to have a couple of those and it was pretty funny handing a full one to someone, that has never used one before, so that they're drinking it in the same orientation as in that picture. Once they hit that certain level of beer in the glass and the air suddenly rushes in to displace the fluid from the front of the ankle to toes area and it catapults the remaining beer out with quite an explosive force, all over the unwitting victim
Has nobody around here seen Beerfest!?
Fermenting: Styrian Aurora Blonde; Flander's Red; Oud Bruin
Aging: Brett'd Old Ale; Ancho Chile Berliner Weisse
On Tap: Cherry Lacto Saison; Scotch Ale; Pumpkin Stout