Yes, a double negative.
I had to work reaLLy hard to keep from laughing during this episode.
When The Sack arrives 15 seconds later I carefuLLy take the McRib package out of the sack, place it on my tray and ask her politely not to throw away the useless sack. She complies for at least the three seconds until I turn around to leave. But when I turned around a second later to check it was no longer in her hand.