Gimen (GI-men): (noun) Beverage, drink.
"Håyi gai gimen este?" = "Who owns this drink?"
"Håfa gimen-mu?" = "What is your drink (what did you drink)?"
"Munga mana'mames i gimen-hu chå fan." = "Please do not sweeten my tea (my drink tea)."
Note: Gimen is also a classifier in Chamorro. If you want some clarification on that, let me know and I'll make a lesson on classifiers. It's not that difficult of a concept, but it does require a bit of explanation and example.