Forward, I am heavy, but backward, I am not.
What am I?
What is always coming, but never arrives?
Tear one off and scratch my head. What was red is black instead. What am I?
How many 2 in. long blocks can you put into a 3 liter
One; once you put a block into an empty box, it’s no longer empty.
What word in the dictionary is always spelled incorrectly?