05/19/2010 11:42 am ET Updated May 25, 2011

Dave Barry's Hilarious Ad Lib on His New Book 'I'll Mature When I'm Dead' (VIDEO)

Dave Barry, the author of such immortal classics as Dave Barry Does Japan, Big Trouble, Dave Barry's Guide to Guys and Boogers Are My Beat, demonstrates novel and exciting uses for his new book I'll Mature When I'm Dead: Dave Barry's Amazing Tales of Adulthood, rendering his interviewer pretty helpless with laughter in the process.

Dave ad-libs everything in this interview -- watch that split second he takes to come up with 'Defacebook' to witness the gears turning in the mind of a comic genius. The already notorious bits in I'll Mature When I'm Dead on vasectomies and colonoscopies are worth the admission price all by themselves, so go get yourself three copies: one for yourself, one for a mopey friend who could use a laugh, and one to replace the first copy your friends will steal from you.