Double Shifting 

The action you take when something online suprises you so much you find yourself hitting BOTH shift keys to type your response in caps.

When I found out the baby wasn't mine. I had was double shifting my facebook status updates.

Double Shifting by Nate Lavelle August 29, 2011

doubleshifting 

The act of giving a hand job to a man while driving a vehicle with a manual transmission.

Suzy told her friends about doubleshifting Jack last night on the way to Thanksgiving Dinner.

doubleshifting by Andy O. July 21, 2008