1 definition by Ben UK 2010
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