Jon Stewart returned to The Daily Show on Monday night for the first time since passing the torch to Trevor Noah

Jon Stewart returned to The Daily Show on Monday night .

He returned to the show nearly a decade after passing the torch to Trevor Noah .

The host joked that Joe Biden , age 81 , and Donald Trump , age 77 , are pulling the same numbers.

He said they're both stretching the limits of being able to handle the toughest job in the world.