In Poland, we put shot of vodka into the beer and call that u-boot - 9GAG
U-Boat | Have you ever had a Jäger cocktail like this??? 💣💣💣 | By Tipsy Bartender | Okay. this one is called the You Boat. Okay? And You guys remember World War
U Boat - YouTube
Beer cocktail - Wikipedia
U-Boot beer cocktail. U-Boot is glass of beef with shot glass of vodka. foto de Stock | Adobe Stock