Where a couple give eachother continuous small kisses on the lips. Often used when the couple are trying to say goodbye and it lasts a long time.
Girl: "It's so painful to say goodbye to my boyfriend! We had a kissing marathon till like 4 am on my front porch."
Girl's Friend: "Ew. Shut up before I smack you."
Girl's Friend: "Ew. Shut up before I smack you."
by PinkeySherbet July 12, 2011