Tim shivered and pulled his cape tighter around him. "Okay," he said after surveying the death trap for a few seconds. "If we can get through the wall of ice cream in our way, I can open the safe door." He looked meaningfully at Bart, until Bart stopped licking his lips at the mound of ice cream in front of them and actually noticed.

"Oh! Oh!" said Bart. "I know!"

"I mean," Robin said, carefully enough that his teeth didn't clatter. "If you have any suggestions. On how to re. Remove it."

"Say it!" said Bart. "Are you going to say it?"

"No."

"Yes! Say it!"

Robin sighed. "Fine," he said. "This l-looks like a job… for Impulse."