Answer:
What has ears but does not listen
Some months have 31 day some month 30 day what month have 28 day
Found under bridges and on the Internet.
If I say "everything I tell you is a lie", am I telling you the truth or a lie?
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
Why did the stadium get so hot after the game?