look up any word, like mexican microwave:
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.
by Nate Lavelle August 26, 2011
10 1
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.
by Andy O. February 28, 2006
1 1