Pope’s glass
n.— «Troops have welded old bulletproof windshields to the tops of Humvees to give gunners extra protection. They have dubbed it “Pope’s glass”—a reference to the barriers that protect the pontiff.» —“Serious use for Silly String” by Rebecca Santana in Stratford, New Jersey Associated Press Dec. 6, 2006. (source: Double-Tongued Dictionary)
Further reading
Sean in Oneonta, New York, says that when he was growing up in New Jersey, his family would pile in the car and set off on a surprise adventure, whether a short distance or long, and the kids would be told only that they were going on Buxtehude...
Amid court-ordered busing in the 1970s, a middle-school teacher tried to distract her nervous students on the first day of class with this strange assignment: find a monarch caterpillar. The result? A memorable lesson in the miracle of metamorphosis...