“I’ve left the Door key in car”

3 friends lived in a flat on the 110th floor.
One day the lift was out of order & they had to climb the stairs to go to 110th Floor.
To pass time & not get bored,
they decided that 1st person should tell a War story, 2nd a Funny story & 3rd a Sad story.

1st person tells a story & they climbed to 50th floor.

2nd tells a funny story & they climbed to 109th floor.

Now the 3rd had to tell a very Sad story.
He said,
“I’ve left the Door key in car”