NBDAAOA Share definition Flag An acronym for "No big deal at all or anything." Used to denote a false sense of humility.(An extension of the acronym "NBD"). Brendan: My fantasy baseball team hit 16 home runs this week, NBDAAOA.Nikko: Cool... NBDAAOA by The TSN August 12, 2010 0 0 Get merch Get the NBDAAOA mug. Buy Now — $32.95 See more merch
