Fun Riddles

Question: A trail, a union, together tied.
Come across me and you will find,
you cannot change the course I'm on,
without me you cannot travel on.

What am I?

Question: What do you use to hoe a row, slay a foe, and wring with woe?

Question: While you were folding a letter I got you.
Usually you will do whatever it takes to avoid me,
but now you can't help but find me.

What am I?

Question: Every time a man lies his nose grows to 150 percent of its size. Every time he tells the truth it shrinks to 50 percent of its size.

What will happen if he alternates between lies and the truth?

Question: This is a bus:

 ____________________
|       |_|    |_|    |_|    |_|       |
|                                        |
|____________________|
     O                         O

Which way is the front of the bus facing (left or right)?