"Your bra... obviously."

"There's nothing I hate more than a predictable alien." The Superintendent sighed as she unclasped her bra, which unfortunately required both hands and left her unable to cover herself for what seemed like an eternity as she fiddled with the fastenings.

Eventually she held the purple garment out with one hand, and clamped the other hand over her crotch.

"I hope you realise I'm giving up a very comfortable bra." She grumbled, "Now, which way to the catwalk?"

In response, all three aliens pointed at a door in the side wall, with a sign over it reading 'catwalk'.

"You, er, could have been bluffing." The Superintendent blushed. She held her hands over her nudity and shuffled towards the door, but halfway there she saw a red lever mounted on the wall. "Of course, no one will see Amy if they all evacuate the building first. Say, if someone pulled the fire alarm?" She quickly yanked the lever down.

The aliens laughed in response.

"That isn't a fire alarm!" One of them chortled, "That's the emergency blast-off switch for our control pod!"

There was a pause, then all three aliens exclaimed in unison,

"That's the emergency blast-off switch for our control pod!"