Surprises are fun, but imagine getting one from your favorite celeb?
But some of her fans impersonate her beyond the comfort of their cars.
With the help of Graham Norton, Adele went undercover as one of the impersonators.

The prank was set up by joke master Ellen DeGeneres.
As she watched from her studio, DeGeneres told Beckham what to say to passersby, through an earpiece.
Jewel
In 2010,Funny or Diehad Jewel surprising fans at aLos Angeles karaoke bar.
The girls hopped on a Hollywood Tours ride and they captured the adventure on their live-streams and Snapchats.
They went unnoticed until fans who saw the videos onlinecaught up with them.
He walked down Hollywood Blvd.
in full costume, chatting with strangers and fans, and even had a run-in with another Terminator.
Later,he posed absolutely stillinsideMadame Tussaud’s Hollywoodwax museum before giving some tourists the fright of their life.
But that wasn’t the first timehe’s gone out in disguiseto surprise fans for charity.
Usher
This 2015 surprise by Usher in Venice Beach was pure gold.
The band members dressed up in disguise to busk on the subway platform.
They played for a few minutes before Fallon revealed them as the real band and the crowd riled up!
San Diego’s annual Comic-Con is ahot spot to catch celebs dressing up in disguise.