Abbreviation for Chuckled A Little Bit. It means you're not quite ROFLMAO and you're not really LOL-ing when you see something funny in text or online. It's when you do just exactly as it says, you just chuckle a lil bit.
I CALB when I watched that video you posted of the ninja squirrel.
από MicMarie 19 Μάρτιος 2011