Students wrapping up school in the southwestern Swedish town of Vänersborg were in for a surprise last week when two of their teachers stripped off their clothes and danced with balloons over their nether regions. The two male teachers, during an end-of-the-year celebration, performed what Swedes call the “Balloon Dance,” for 140 ninth grade students. “I was shocked when my daughter told me,” said a mother of a student to newspaper GT. The principle of the school has spoken with the teachers regarding the dance. Another teacher at the school said it would have been unsuitable for teachers to have...