A penis, generally extremely sloppy and covering in lubrication of some kind.
"DAMN that is one sloppy milkstick! I bet the Bruhn child sucked that monster for hours! That Asian one of their could learn a thing or two from that son of theirs, what marvelous head he preforms!"
by damniloveasians December 21, 2011
1 more definition
noun for a Xbox Controller that gets sticky from getting milk or any sticky liquid in the controller/buttons.
Can I play with you guys? Yes but you have to use Milk Stick.
by tarzanwynn September 04, 2011