Answer:
What starts with a T ends with a T and is full of T?
The profession of Jimi Hendrix and Eric Clapton
There is one in every corner and two in every room.
Ms Red lives in a red house, Mr blue lives in a blue house, Ms pink lives in a pink house, who lives in the white house?
Once you know it exists, it no longer exists. What is it?
It is something you will never see again.