DTSD Share definition Flag abbreviation for "down to suck dick" - one who is willing to prefrom oral sex on a male, suck dick. simmilar to DTF "Dude, did you fuck her?" "No man, Genny is only DTSD" DTSD by Genevieve!!!!YEAHH!!! April 5, 2007 0 0 Get merch Get the DTSD mug. Buy Now — $32.95 See more merch