I have just thought of a possible WAM party game. It would require the construction of "closets" that would have a door in the back and a panel in front to reveal who was inside, Those who are playing would be grouped into partners. You would need 1 closet for each partnership, and the closets would be lined up in a row. One member of each partnership would be selected to be a "hider". The partner who is isn't the hider is part of the group of "seekers". The seekers use some random method to randomly determine the turn order. First, each of the hiders secretly enters one of the closets. After they have hidden, the seeker whose turn it is picks a pie and opens one of the panels If the seeker finds his partner. he/she pies her partner and becomes a hider; the pied partner then becomes the seeker. If the seeker doesn't find his or her partner, then he or she puts the pie down and waits for his or her next turn. The hiders hide again, and the next seeker takes his or her turn. Play continues in this fashion until all of the pies have been smushed into the players' faces.
If using closets is inconvenient or impossible, one could accomplish the same thing by using boxes and tokens. Each hider secretly places his or her team's token in one of the boxes. The seeker then picks a box. If the seeker picks the correct box, he or she pies the hider, etc.
The game could also be played by couples 3-card monte style.
When I first thought about the rules, I thought the hiker and seeker should change roles when the seeker doesn't find the hider, and the game could certainly be played that way; however, as I was typing this I realized this could lead to a situation where, if the seeker always managed to find the hider, the hider would be ecstatic because he or she was completely creamed, but the seeker would be disappointed by being completely clean. As a matter of fairness, I reversed the rule.
Of course. the game doesn't specifically need pies as a reward. The hider could also be slimed, be dunked in a tank full of mud, or be pushed into a pool, or anything else one could think of.
Disclaimer--I realize that it is quite possible that someone thought of the rules for this game before I did, and I apologized if I have inadvertently violated any copyrights. Nevertheless, I wish to reassure everyone that it was, at least consciously, an original thought on my part.