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The act of masturbating and brushing your teeth at the same time. This can be performed in any setting.

Note:This act is mostly performed in the shower and does not always require crest toothpaste. Some have even double crested while engaging in the act of sex.
Guy 1: What the hell do you look so happy for?

Guy 2: I just did the double crest and feel fantastic!
by Malice2.12 December 02, 2010
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