Martin dick Share definition Flag A penis the approximate size of a human nipple. An unfortunate turn of events for any woman whom expects to be satisfied. Jen - yo, that's a Martin dick.Seb - what do you mean?Jen - is that a dick or a nipple? Martin dick by Thefinisher69 January 11, 2017 0 0 Get merch Get the Martin dick mug. Buy Now — $32.95 See more merch