If you've been to Adele's concert, you know she begins by surprising the audience in the middle of the arena, not on the main stage. Turns out she gets there before the show starts in a black box that is normally used to transport equipment.
OF COURSE Adele doesn't need anything fancy or tricky to get under the stage... I can only imagine she has a peep hole and is creeping on everyone as she wheels by..
But as the Internet has caught on, she's getting a little anxious about it..