This sound is recorded with a h2 zoom and you could percieve the sound of openning and closing a wc door. You can perceive a closed space with resonances from some machine and where someone open a wc door and after a fews seconds door is closed.
I like rolling my tobacco, so i thought "why not use my roller to make a sound effect?". I gently opened the lid infront of the mic. This was recorded at the open window institute sound booth in centurion, south africa.