the big d Share definition Flag the big d is a short term of the big dick and can be used to imply that people want it 1- hey dude 2- shut up 1- just cuz i have the big D and you want it 2- so did your mom last night the big d by All this 4skin January 8, 2013 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug