がぶがぶ
gabugabu

To-Adverb

1. gulping down (a drink); guzzling; chugging

Onomatopoeia
そんなにがぶがぶ つずけると、アル あるちゅうになるのがオチですよ。
sonnani gabugabu nomitsuzukeruto aruchūni naru noga ochidesuyo.
If you go on drinking so much, you may well end up an alcoholic.
na-Adjective

2. sloshing around (of liquid in one's stomach)

Onomatopoeia
Other forms: