Grammar – 36 (2) A good pun is its own reword!

Well, it’s reigning puns now. A friend sent me the following on e-mail. See if you can crack them.
A MAN’S HOME IS HIS CASTLE, IN A MANOR OF SPEAKING.
A PESSIMIST’S BLOOD TYPE IS ALWAYS B-NEGATIVE.
MY WIFE REALLY LIKES TO MAKE POTTERY, BUT TO ME IT’S JUST KILN TIME.
SHOTGUN WEDDING: A CASE OF WIFE OR DEATH.
I USED TO WORK IN A BLANKET FACTORY, BUT IT FOLDED UP.
A HANGOVER IS THE WRATH OF GRAPES.
IS A BOOK ON VOYEURISM A PEEPING TOME?
SEA CAPTAINS DON’T LIKE CREW CUTS.
A SUCCESSFUL DIET IS THE TRIUMPH OF MIND OVER PLATTER.
A GOSSIP IS SOMEONE WITH A GREAT SENSE OF RUMOUR.
WITHOUT GEOMETRY, LIFE IS POINTLESS.
WHEN YOU DREAM IN COLOUR, IT’S A PIGMENT OF YOUR IMAGINATION.
READING WHILST SUNBATHING MAKES YOU WELL-RED.
WHEN TWO EGOTISTS MEET, IT’S AN I FOR AN I.
Can you list the words on which the pun has been played?