If you are given an open-book exam, you will forget your book.

If you are given an open-book exam, you will forget your book.
If you are given a take-home exam, you will forget where you live.

Related:

• Fifth Law of Applied Terror: If you are given an open-book exam,
  you will forget your book. Corollary: If you are given...
• Fifth Law of Applied Terror: If you are given an open-book exam,
  you will forget your book. Corollary: If you are...
• If you are given an open-book exam, you will forget your book.
  Fifth Law of Applied Terror If you are given a take...
• Fifth Law of Applied Terror: If you are given an open-book exam,
  you will forget your book. Corollary: If...
• Fifth Law of Applied Terror: If you are given an open-book exam,
  you will forget your book. Corollary: If you are...
• If you are given an open-book exam, you will forget your book.
  Fifth Law of Applied...
• If you are given a take-home exam, you will forget where you live.
  Corollary to the Fifth Law of Applied...
• You know you're in trouble when you forget your skates
  at home...
• Law of Applied Terror:
  80% of the final exam will be based on the one lecture...