An Indonesian (and probably Malay, too) word. This describes the behavior of women when they see a cute baby. It also describes the baby itself. Translated into English, it means roughly:
"The state of going out of one's mind in adoration of something that is extremely likeable or cute."
A woman under the influence of Gemes will hug and fondle the baby for very long periods of time, oblivious to all other disractions. (Including but not limited to: a boyfriend's inquiries, the train leaving the station, or the arrival of winter.)
Oftentimes, the bout of Gemes can be so severe that the baby will start crying, which only serves to intensify the attention paid to it in a vicious cycle of female hormonal reactions.
A group of Indonesian women: Aw! Look at the baby! GEMES!
A group of Indonesian boyfriends: WTF.
Used as an adjective: The baby was very gemes.
Used as a verb: The baby was gemesed.
Used as a verb: The women became gemesed over a single baby, who was itself gemes.