What (actual) geeks have to do in situations where their nerd knowledge and/or abilities (with computers, video games, internet, et cetera) would come in handy, but using them would reveal to everyone that they are a geek. The phrase itself is taken from Dragon Ball Z. Also extends to anime fans who hide their interest to avoid being labeled as a weeaboo, or weeaboos in a social setting who actually manage to shut the fuck up for once.
1. They had a video game tournament at my college last week that even included Starcraft. Despite how well I know I would have done, I chose to hide my power level in order to keep up appearances. Hide your power level.

2. I was walking through town with friends when we happened upon what appeared to be a cosplayer gathering. Though I could name every character, when my buddy asked what the shit those guys were doing, I hid my power level and told him I had no idea.
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when you hide your obsession with anime, manga, and japanese culture in general from the public eye.
I often go on /a/, but I try to hide my power level IRL.

Man, hiding your power level can be hard as shit sometimes.
by kandex January 2, 2012
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The act of hiding your power level is to conceal your true intentions from other people. While hiding your true identity, you seek to convert a group of people to believe in your ideology. This can be done in forms of jokes, desensitizing people to the point where they wouldn't mind who you really are.

This comes from far right/left communities who float around Reddit, 4chan, and other internet forums. These people try to convince others into believing in their political ideologies. They do this in the form of jokes, slowly ramping them up over time until they are full blown statements of what they believe in, and by that point nobody speaks against it; you know, cause it's just a "joke".
Converter A: yeah I hate X group of people what a bunch of insert slur here, haha, am i right?!?!
Victim: dude, what?
Converter B:*pulls A aside and whispers* bro chill, hide your power level.
by Crubber March 6, 2020
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