My wife and I were in Hawaii in Feb, and we went out one day to look for birds. We were standing at a vantage point along the road looking down on the beach and waves, when I spotted a couple of boobies flying just off the beach in the swells. "Hey, there's a pair of boobies!" I got a few strange looks from other tourists who had also stopped to take in the sights and one teen aged boy who vainly tried to find our target. After that, we started calling them Bs.