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In efforts to get a tan by direct sun-exposure, one knowingly avoids high SPF values in order to get a darker skin-color ASAP. This usually means risking a sunburn. However, burnt skin will gradually turn tan.
Girl 1: Hey, you should apply some sunscreen. You're gonna get a sunburn.

Girl 2: That's OK, I'm power-tanning.
by simba_j August 09, 2015
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