The two worst jokes in history....?

As tweeted recently between Steve Stone and Alex Shaw;

Alex: Why are all (paranormal) mediums the same size?
Steve: I don't know, Alex, why are all mediums the same size?
Alex: Because they're all medium.

Steve: I accidentally tripped my mate, Karl. Why are his bumps and grazes all the same size?
Alex: OK, why?
Steve: Because they are I-dent-a-Karl.

You'll be glad to know that our books are better than our jokes;

For my series of sci-fi adventure novels, please visit http://steven-stone.blogspot.com/.

For further information on my novel 'Intrepid', a top 100 Kindle bestseller in science fiction, military and war, see;
Premise - http://stevestonechat.blogspot.com/2011/06/premise-for-novel-intrepid.html
Review - http://stevestonechat.blogspot.com/2011/06/review-of-novel-intrepid-by-martin-ince.html

For further information on the sequel 'Intrepid - The Two Storms', see;
Premise - http://stevestonechat.blogspot.com/2011/06/premise-for-novel-intrepid-two-storms.html
Review - http://stevestonechat.blogspot.com/2011/06/martin-ince-review-of-novel-intrepid.html

For an excellent introduction to Alex's series of special forces thrillers, please visit http://www.alexwshaw.com

And for the other jokes in this series, please visit
http://stevestonechat.blogspot.com/2011/07/worst-jokes-in-history-worse-still.html and
http://stevestonechat.blogspot.com/2011/06/worst-jokes-in-history-even-worse.html