Halloween week
From: http://www.bbc.co.uk/worldservice/learningenglish/language/2012/10/121031_todays_phrase_keep_eyes_peeled.shtml

To keep your eyes peeled

Pumpkin
A pumpkin made into a lantern for Halloween, often called a 'jack-o'-lantern'. Photo: BBC

Today's Phrase

'To keep your eyes peeled' means to stay alert and look out for something or someone.
For example:
John told me he'd meet us in the mall. Just keep your eyes peeled.

We need to follow signs for the motorway, so keep your eyes peeled.

Mum will be home any minute. Keep your eyes peeled whilst I tidy up! 

Don't confuse it with

'To keep your nose out' means to mind your own business.
This has got nothing to do with you. Keep your nose out!

Interesting fact

A modern jack-o'-lantern is typically a carved pumpkin. It is associated chiefly with Halloween. The top is cut off, and the inside flesh then scooped out. An image, usually a monstrous face, is carved out, and the lid replaced. The name is associated with Irish folklore about 'Stingy Jack' who played tricks on the Devil.