Top Definition
A sound effect used to point out something random/ out of the ordinary, usually said repeatedly.
Katie: "Look at the stars!! Biem Biem Biem!!"
Mirek: "Biem biem! Wooooah!"
by Kittiekittiemeowmeow February 04, 2010
Baby bunny killer
Biem is a baby bunny killer.
by Lola 8675309 June 15, 2016
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