One of Lil' B the Based God's catch phrases. It has numerous connotations, one of which would be to perform the act of sexual intercourse with your girlfriend. Based god can fuck any girl he wants because he looks like a combination of Ellen Degeneres, Jesus, and Miley Cyrus. Another connotation would be that Brang dang dang is the sound of Lil B's balls swinging. One can imagine it being whatever it wants
Guy 1 " What are you doin this weekend?"

Guy 2 "Me and Hannah are about to do the brang dang dang all weekend"

Guy 1 "Awww yea!!!"
by bballsnipe March 28, 2011
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