You're trapped in a room with no windows or doors, you have only two halves of a table. How do you get out?

stack the two halfs of the table and climb over the wall.

Put the two halves together to make a whole. Climb through the hole. Works better when spoken.

 

Edited February 14, 201114 yr by imatfaal

It'd have been slightly more cyrptic if you'd given the puzzlee a table and a saw. I recall this being the punchline to a book I had as a kid called Math Curse in which the protagonist was caught in a series of increasingly absurd situations with a numerical bent to them, great way to make kids see both maths and terrible, terrible, terrible puns in everything they do.

Take the two halves of the table and place them together. 2 halves form a "hole" climb out the .hole:

 

extended version:

 

Look in a mirror see what you SAW. Take the saw and saw a table in half. 2 halves make a whole ..."crawl out the hole.