How ‘bout “Excuse me, kids, but I need to go down the hall. I’ll be right back.”
Compromise: Take it out, and run down the hallway urinating with the thing flopping all around like a garden hose with the water on full blast.
And in Clayton County, I can assure their response would NOT be, "Yes, sir, we will sit quietly studying our lessons until you return."
Most likely there would be several felonies committed, and at least one sex act performed in the room before he returned.