The term "sake bomb" refers to a popular Japanese drink that involves dropping a shot of sake into a glass of beer and chugging it. While there aren't many direct synonyms for this specific drink, there are a few other terms that might be used to describe similar concepts. For example, a "boilermaker" is a drink that involves dropping a shot of whiskey into a beer. Additionally, "shotgunning" a beer involves puncturing a hole in the can and chugging it quickly. While these terms may not be the exact synonym for a sake bomb, they both involve quickly drinking a combination of alcohol and beer.