" ... a sudden and unexpected guffaw could cause liquid to escape either orifice ..." (?)

My personal suggestion, based obviously on many more people of good humor than are included in the experience of the esteemed and respected GUEST, is that the sentence must be amended to:

" ... a sudden and unexpected guffaw could cause liquid to escape ANY orifice ..."

With the exception of spewing from mouth and nose, it would be unusual in circumstances I can visualize easily to see impingement on monitor or screen, hence references to other modes of execution are understandably absent from conversations here (or at least are rare).

(Although with a little effort, the "visualizations" do perhaps present some "interesting" possibilities, perhaps useful for future "inducing" of the phenomena at hand. Utility would likely be limited to exchanges with certain personae here who have appropriate quirks of body and soul.)

John