In Boston I could get a beer from Denmark thst was sold only under the table and told to never redeem the empties'

One beer would numb your face.
Two would make you a quivering laughing mass on the floor. It had a white powder that could be seen if swirled around.

While the beer of the same name is made in the US and Canada I is not the same
It was called Giraffe with a long neck bottle and a spotted foil on the neck.