Because your head is almost touching the ceiling!
Instructions
- Read the question.
- Read the answer.
- Click 'Help' if you need help to understand the joke.
How do you know if there is a monster under your bed?

Help
The 'ceiling' is the top of the room. In the picture you can see the boy is almost touching the ceiling because the monster is so big!
Discussion
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How to get rid of the monster under your bed
Call your dad to brutally murder it