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1.
From procrastination (to waste time) and chat (to talk, especially over the internet)

The act of continuing to chat to a friend using an internet chat program, long after you both should have stopped and gone to work/bed/the loo etc.
It is common for procrastichatters to exchange goodbye's several times during the period of procrastichat
Person 1. We really must stop procrastichatting

Person 2. Yeah. Talk to you tomorrow

1. K, bye

2. Oh, before you go...

(Ad nauseum)
by Deluded Illusion March 01, 2006