underwear risk
n.— «The most notable side effects are gastrointestinal problems ranging from flatulence to loss of bowel control, one reason its domestic sales last year were only about $100 million. “The risks seem relatively small, but I do have concern with what we euphemistically call the underwear risk.”» —“Panel Backs Glaxo’s Plan for Diet Drug” by Stephanie Saul New York Times Jan. 24, 2006. (source: Double-Tongued Dictionary)