A form of saying "draaaank" or "drink" It's also another way to say Jerin Koruthu, which is a common Indian (particularly malayali) name. Say Jerannk and you're good! The funny thing is, it sounds like jerkaan "jerkin" which is the term used when one is ejaculating.
"CHUG IT CHUG IT CHUG IT!! You jerannk that 40 yo!"
by Onis Nappahtse November 07, 2009