Coming fron the viking name Ásgeir which translates into weapon of the gods.
Geiri is short for Ásgeir and in slang is used as the last sip from the beer can.
Geiri is those few drops of warm beer that always remane at the bottom of every beercan
Does anyone want to drink my Geiri?
Give me another beer, I only have the Geiri left
I cant drink anymore of this beer, I only have the Geiri left