Jack Fish-ing is when you or another person eats food very loudly in an online call. This can apply to the crinkling of chip bags or the slurp of soup amongst other things.
Tony was eating ships so loud on Skype, I couldn't concentrate on my game. He was totally pulling a Jack Fish/Jack Fish-ing.
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."