Trivia question

[dashtrasher]

This is totally unrelated to airplanes, but we need help with a trivia question:

The theme of an event is "Springtime in Paris" and the question reads: What do annual and adjoining room have in common?" Help us out, it's worth $1000 to a charity!

 

[avbug]

Not sure, but if talking about proximity to a mother in law, both an annual visit, and being in the adjoining room, is WAY too close.