A very very tiny penis. One as small or smaller than a babies penis size. Usually no more than 1 inch flaccid, and no bigger than 3 inches hard.
The last girl i was with used to always tell her friends about me saying "Gaz has a tiny tiny dick! Its a baby dick, only smaller! hahaha"
by GarethB February 10, 2006
A little itty bitty tiny penis that can barely be seen. Usually under 3-4 inches. Not something you are proud to show people. Upon being asked this question one with a baby dick will usually be hesitant out of fear from showing said baby dick.
I have a little baby dick.
by Michael Todd Rehmeyer.. January 18, 2008