Performing 5 or more tasks at the same time. Mega-tasking should not be attempted if you are an idiot.
I was working on an excel spreadsheet, writing a word document, taking on the phone, checking my email, eating lunch and drinking a soda at the same time... I was mega-tasking.
When you signoff of AOL Instant Messenger and never sign on again. This usually occurs in the early to mid twenties when people decide that the AIM game has nothing more to offer them
It was late one night... I was drunk and going through my buddy list finding no one that amused me... and I signed off for the final time... Its the final signoff.