While it is widely believed that April Fools' Day may have roots back in ancient Rome or Britain, clear references to the April tradition do not appear until the late Middle Ages, according to Stephen Winick of the Library of Congress' American Folklife Center.

From radio hosts who fooled thousands to cars dangling from bridges, Saskatoon has built a reputation for pranks that have surprised, confused and amused residents.

"Beginning this spring, residents may notice increased aerial patrols over town as our new helicopter unit assists with traffic enforcement, suspicious squirrel activity, missing farm animals, and mon...