Today's the day to celebrate love. Chocolate, flowers, candlelit dinners, and, for those of us who are a little more adventurous, a quick trip to the powder room for some romance on the fly. We've asked around and even test-driven a few, so we can confidently say that these are the best New York bathrooms for a date-night quickie. Don't tell the establishments we sent you - and remember kids, wear protection!