Originally Posted by upthewazzu
Seems like it would almost be impossible to pull off on a smaller plane like a 737. A 777 or above might work, since some of the bathrooms aren't as visible.
the 777 (which they use on the JFK-HKIA 15hr flight) has bathrooms all the way in the back that are quite spacious (no curved walls and you can probably take two large steps inside), its the furthermost back two rooms. plus there are two more smaller bathrooms back there also and you can easily cross over (because of the food/supply area). so meeting up/exiting going separate ways through is unobstructed.
The business class bathrooms are big enough to do it, but you're totally exposed entering/exiting.
Unfortunately the business class seating pods don't allow interaction between each other, so you're almost better off getting seats all the way in the back in coach, because most of the time there are empty seats back there anyway so you can go at each other throughout the whole flight.