A character hides inside a bathroom stall, and to find him, another character enters the bathroom and begins a systematic search of each stall. If it's our protagonist hiding from the villain, then four things may happen (and none of these count as subversions!).
Who is searching for whom varies widely, but it always involves a linear process-of-elimination search of the stalls. Expect a shot at foot-level at some point, and aScare Chord when the last stall door is flung open. Variations on the basic structure are quite common.