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1.
To overcome an obstacle in ones life by seeking out the cause of the obstacle and doing everything possible to eliminate it. Powering-through can help to resolve almost every possible negative endeavor. A misconception is that being passive and allowing time to solve problems is also a form of powering through, however this is incorrect and is only believed by p.p. headed idiots.
Person 1: Dude, my parents found my stash but I convinced them that it was oregano... I really powered-through that problem.

Person 2: I thought "power-through" meant letting time pass and hoping that the problem resolves itself?

Person 3: No, only dumb kids with under-stimulated brains think that.
by runningfreaks October 02, 2010
 
2.
The act of continuing intercourse after ejaculating until you ejaculate a second time.
"I didn't think i had it in me after the first round but poweredthrough and came up with an even bigger second round."

"I thought it would be a short performance but I pulled the powerthrough without her even knowing."

by Milhouse and Baldwang April 17, 2008