The action of going in for a cheeky snog with a member of the opposite sex while intoxicated. The action is often undertaken with no invite or announcement. The result is often surprise for the said member of the opposite sex, or embarrasment for the lungee, when avoidance tactics are employed.
Out drinking on the town and get chatting to chick, Dave went for the drunken lunge but she ducked and weaved away from him. He stumbled into the table and split some drinks. Very funny.