gargler
/ˈɡɑːɡələr/Definitions
1. noun
A person who gulps or swallows noisily, especially while drinking.
“The loud gargler in the back of the restaurant was disrupting the whole dining experience.”
2. verb
To swallow or drink noisily, especially with a gulping or gurgling sound.
“He gargled the last of his drink and then belched loudly.”