The problem with this book is that I'm not Harry Allen. I'm Stephen Buxton. Harry Allen is a very funny magician and entertainer, and I'm not him. This book gave me the opportunity to learn a valuable lesson in material and when to use it.
I saw Harry lecture at Ipswich back in the 90s. It was a fantastic lecture and very funny - full of excellent one liners and put-downs. I bought one of his pamphlets on jokes, and when I saw that he had combined all the jokes into one volume, I bought it straight away and read it from cover to cover,
Unfortunately, I read it a couple days before a club competition, and I decided to use a couple of the come-back lines when I was heckled by a kid (I've only got one nerve, and you're treading on it"). You could have recorded the silence and sold it as a John Cage tribute act.
The problem was that I was not Harry Allen - I didn't know how to *use* the lines. To be honest, I still don't. I quickly came to the conclusion that I have got exactly the wrong persona for telling insults to the audience. There are those out there who can be rude to the public, and no one minds (Frankie Boyle, Jerry Sadowitz, Alexis Sayle etc spring to mind), and then there is me.
That's not to say that there aren't any lines in there that you can use - it isn't all heckler put downs and insults. But if you haven't got the character for it, then don't bother using them.
As a stand alone joke book it is very funny, and if you buy it with that in mind, then you'll probably love it (although if you aren't a magician there are a fair few jokes in there that will go straight over your head).
And I will admit that every time I burp I do use his line "That reminds me of the time I drank 8 Cokes and burped 7 up"