Do you think it would be funny if I give people the wrong directions on purpose?
I don't understand. Why do you think it would be funny to give the wrong directions.
I don't like it when people ask me for directions, and it would be funny to know that they're going to get lost.
You should never send people in the wrong direction on purpose. This is mean behavior, and definitely not funny, because you are misleading people. You should behave in a kinder way towards others.
WTF no one will get hurt if I do it and it is free entertainment for me.
They may not be physically hurt, but they're going to be annoyed when they aren't able to get to the place they want to be. It's really inconsiderate to try to send someone to the wrong place, and I don't think you should do it.