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An unspoken greeting performed or done by fist bumping, tapping, or hitting. Usually only by tapping light. Sometimes a person is agressive n hits the other fist hard. It's usually only spoken if the other person is unaware or if a person confronts the other about not doing it or being left hanging with a fist in the air... . Can also be used to agree about something such as a titty flash, upskirt, payback/revenge/karma, or getting high etc.... .
I was looking out for you bro, *dapped*, that's right bro you better dap me up.

Speaker knockers has a song that's titled "dap you up"!
via giphy
by Anonygnostymo217 August 05, 2018
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