You look down during the day to notice your member sitting larger than usual (n.b. refers to a larger than average floppy length and/or girth). CONGRATULATIONS - you are having a big dick day!
A smiling Jim emerges from the bushes having taken a quick whizz. "Great news... I'm having a big dick day" says Jim to his friends. Friends are happy for Jim (some high five).
by Ben UK 2010 June 12, 2010
by No Hemingway July 03, 2019
by OSC ThiccLaw April 21, 2019
November 13th. A day for all of the gents to celebrate their endowment. The first National Big Dick Day was started in 1798 by John "Big J" Dickinson, with the date chosen to be his birthday. The validity of Big J's claims is disputed.
by Billiam27 June 05, 2021
I'm reddy or big dick day
by its big boy November 08, 2019
by HISTGD September 03, 2021