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gulping down (a drink); guzzling; chugging
sloshing around (of liquid in one's stomach)
水みずをがぶがぶ飲んのんだ。
I gulped down water.
ビールをがぶがぶ飲むのむな。
Don't guzzle the beer.
暑くあつくてがぶがぶ飲みのみたい。
It's hot and I want to chug drinks.