A milkbox occurs when you open a brand new box of cereal and pour the milk directly into the bag using the box and bag containing the cereal as the cereal bowl itself.
"Jessisa and Rayn shared a milkbox of lucky charms for breakfast."
by Sir Rayn Tacy September 18, 2008
verb. to make someone dissapear usually by killing them.
keep pressing me and im gonna milkbox that ass.
by $PAZZ April 01, 2003