Such attention to detail can sound "anal retentive, " says Bill Host, a hospitality and tourism management professor at Roosevelt University in Chicago.

WSJ: Conventional Wisdom: Nametags Say a Whole Lot About You

The unabsorbed fat leads to gas, flatulence, diarrhea, increased bowel movements, and even, how to put this delicately, anal leakage of oily material.

NPR: Slate's Medical Examiner: Xenical OTC