Birds do it, bees do it. Just don't try it on Singapore Airlines. The carrier has become the first to offer the world's first airborne double bed aboard their new A380 jets but prefers users refrain. We're talking sleeping like Rob and Laura Petrie -- only in a double. The Times Online talked to the first couple to try it out: Tony and Julie Elwood from Perth, Australia. "So they'll sell you a double bed, and give you privacy and endless champagne - and then say you can't do what comes naturally? Seems a bit strange," said Tony who was described as a "vigorous'' 76. Trophy wife Julie, 51, agreed. "They seem to have done everything they can to make it romantic, short of bringing round oysters. I'd say they shouldn't really complain, should they?'' Apparently, the airborne suites, which are just partitioned off so aren't sound proof, run about$14,320 for two tickets. Even though the suites aren't sealed off I'm wondering how the airline intends to police this, given how loud it is inside the cabin of a jet? I guess the staffers of SIngapore's national airline must be a pretty vigilant lot. This is brought to you, after all, from a country that has caned folks for any one of dozens of crimes ranging from theft and drug violations to vandalism and overstaying your official welcome. Just keep your feet on the floor and everything will be fine.