>Here are a few more questions, for those of you who like to waste their precious time as much as I do!
>
>1) A paper-eating insect plans to make a tunnel in a 3-volume encyclopedia (the volumes are on the shelf, in the library, and placed in the usual order). The tunnel is to start on page 1 of volume 1, and end on the last page of volume 3. How many days will this take, supposing the insect requires 1 day for each cover, and 3 days for the pages of one volume? Note: after trying this out in your head, or with pencil and paper, it helps to actually take a look at real books.
>

7

>2) Is it legal for a man to marry his widow's sister?
>

In this life or the next ? (I guess the answer is technically yes, as I don't think there's any legislation for what a dead person can or cannot do).

>3) A patient goes to the doctor. His complaint: "Every time I drink coffee, I have a severe pain in my right eye". What should the doctor recommend the patient?

Pick the cup up with his left hand or make sure all sharp implements are removed from the right hand.