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When fixing, upgrading, or customizing a car, house, boat, etc. and one modification turns into several due to the unstoppable impulse to do more and more in order to make said item perform better, more unique, or more comfortable.
"Kyle said he was just going to put a new exhaust on his Trans Am, but now he's got the engine pulled, new seats, and a fresh paint job. It's essentially turning into a full restoration project."

"He's been impulse fixing."
by Axxis August 04, 2013
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