When a penis is attached to an automatic milking device used on cows. This may seem like a pleasurable experience, however, it is very painful. Abbreviated as M.D.
by The room mate May 15, 2011
by Nathanial Beddington February 25, 2010
Young man, you're being called a milk dick because you claim to hate gays , but you're kissing another boy on the lips.
by Mr. Moose the 1st July 26, 2016