It comes in abundance but never sees the light of day,
it has no mass but ceaselessly weighed,
the tighter you grasp, the more it gets away.
It runs through your head.
What cannot see but has an eye?
Even though I belong to you, other people use m...
As it dries, what gets wetter and wetter?
Forward I'm heavy, but backward I'm not. What a...
What word has the most letters in it?
Everything alive does it yet no one knows what ...