What's Got Up Philip's Nose?

He's known for getting irritated easily, but this time, it seems, something really has got right up Prince Philip's nose.

Image #: 17198059 Britain's Prince Philip is driven away after a visit to the Cathedral in Leicester, central England March 8, 2012. Flag-waving crowds of Britons lined the streets and politicians proffered gushing praise as Queen Elizabeth launched a nationwide tour of her realm on Thursday to celebrate her Diamond Jubilee. REUTERS/Darren Staples (BRITAIN - Tags: ENTERTAINMENT SOCIETY ROYALS) Reuters /DARREN STAPLES /LANDOV — Darren Staples, Reuters / Landov

Buckingham Palace declined to comment on Philip's unusual nasal adornment as he toured Leicester with the wife yesterday, but nose bleeds are a frequent side effect of blood-thinning drugs, frequently prescribed after the type of heart surgery Philip underwent after suffering a heart attack at Christmas.