I get it!....Whaaat?

Tonight I was told that if you set up two worm holes on a pool table with a two second set back, and you shoot the ball into one hole (positioned exactly right of course) the ball would never come out of the other hole.  In fact, it would have never gone into the first hole in the first place because of the two second set back...or something of that sort...either way my brain hurts and it won't stop now -.-