Horror story in just one sentence.
3 friends lived in a flat on the 100th floor.
One day when the lift was not working they decided to tell each other stories as they walked up the stairs.
The 1st one told a comic story till the 50th floor.
2nd one told an action story till the 99th floor.
And the 3rd one told a horror story in just one sentence.
“I forgot the flat keys in the car”.