A new patent has issued in time for Mardi Gras: a drink tray that automatically makes "bomb shots." As explained in the patent (8,104,629):
A popular form of drinking is know[n] as "bomb shots". A bomb shot typically comprises a shot glass filled with some form of liquor, and a larger glass filled with another beverage. The shot glass is dropped into the larger glass and the combined beverages are then consumed. In one such drink called a "boilermaker", a shot glass full of whiskey is dropped into a partially filled glass of beer.
The patent describes a tray with prongs that hold shot glasses above pint glasses. When you pull a pint glass from the tray, the shot glass slides off the ends of the prongs and falls into the pint.
"When the shot glass strikes the bottom of the larger glass,
the carbonation of the beer causes a foaming action."
Since greater drinking efficiency has its hazards, the patent suggests that the shot glasses can be held to the bottom of the pint with magnets, so they won't "fall and strike the user in the mouth."