Bavarian Milkshake Share definition Flag The act of preparing and drinking a milkshake from your partners anus through a straw. Girl: Hey you wanna have a Bavarian Milkshake with me?Nick: Hell yeah! That's my shit! Bavarian Milkshake by gunslinguh_nick December 31, 2010 0 0 Get merch Get the Bavarian Milkshake mug. Buy Now — $32.95 See more merch