the act of three girls making-out with each other simultaneously. Special attention must be paid in this maneuver to allow for each girl to kiss the other two, ie proper nose placement and lip alignment. The best view of this phenomenon is from the aerial perspective.
When two bi-spurious females add a third girl to the mix the reaction is usually compounded exponentially.
Person 1: Would you take a look at those attention-whores... they are so bi-spurious.
Person 2: wait a minute, is another girl joining in?
Person 1: Holy Shit, Three Leaf Clover!!