Flipping the On Switch is the act of going from lethargy to productivity, but more so in self-improvement than in other ventures, save for buisness. A mental tactic to change one's personality from simpering to being forthcoming and stalwart. Similar to the saying "Kicking it in Gear".
Guy 1: "Ben's performance in the last quarter was pretty bad, but look at him today, his sales are through the roof!"

Guy 2: "Yeap, he must have Flipped the On Switch"

"I really had issues, going from laziness and lieing, making everyone else do things for me and being an all out bum. Then I discovered Flipping the On Switch and I feel great, no laziness, all go-getting ability and nothing but the truth!"
by Yawrood June 16, 2009
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To turn off all emotions and feelings to protect yourself from getting hurt.

Vampire Diaries reference.
I was so hurt by you, but now i've flipped my humanity switch and don't feel a thing anymore!
by VampireDiariesLover September 12, 2015
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v. To have a sudden and drastic change of heart.
I thought that chick was easy, but she flipped the switch on me and said she's waiting for marraige.
by keyshaw November 24, 2004
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"Flip my switch" means to turn me on (make me hard) and start flippin (start fucking).
Yo baby girl, you tryna flip this switch tonight?
by KJOMATIC December 9, 2017
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To lose control; freak out; become enraged and pissed off.
If that douche bag doesn't back up off my girl I am going to flip a swith!
by Slayerize May 10, 2005
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damn i’m so late, i need some dick to flip the switch
by lizk14 January 28, 2020
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