Good Riddles

Question: First think of a person who lives in disguise,
who deals in secrets and tells naught but lies.
Next tell me what is always the last thing to mend,
the middle of middle the end of the end?
And finally give me a sound often heard during the search of a hard-to-find word.
Now string them together and answer me this,
which creature would you be unwilling to kiss?

Question: I have no wings but I fly,
I have no teeth but I bite.

What am I?

Question: What is at the end of a rainbow?

Question: 500 is at my end and my start, yet 5 is at my heart.
The first letter and the first number make me complete.
My name is that of a king.

What am I?

Question: Little Johnny's teacher asks him, "If I gave you two cats, then two more, and two more cats; how many would you have?"

Little Johnny replies, "Seven!"

His teacher asks him again more slowly, "If I gave you two cats, then two more, and two more cats; how many would you have?"

But again Little Johnny replies, "Seven!"

Next she asks, "If I get two cats, then two more, and two more cats; how many would I have?"

Little Johnny replies, "Six!"

"Good Job Johnny! Now if I gave you two cats, then two more, and two more cats; how many would you have?"

Johnny thinks for a second, "Seven."

But Johnny is not wrong. Why?