Here are some of my favorite riddles:

What has 4 legs at dawn,
2 legs at day,and
3 legs at dusk?

A human

I have hands but can not touch or feel.
I have a face but can not see,hear,taste or smell.
Who am I ?

A clock


A man walked through the rain without any source of protection,
but not a speck of his hair got wet.
Why?

He was bald.