It's Comic Relief, also known as Red Nose day today in the UK, People all over Britain do silly things for Charity. I've folded some noses and am going to sell them at work.
The big one at the top is Jeremy Shafer's Clown Nose, diagrams available on his website at http://www.barf.cc/ It's a Stellated Octahedron and in fact a clever open backed variation of the Water Bomb.
The one being modelled by my mask is a False Nose and Moustache by Gabriel Alvarez, diagrams to be found in Paul Jackson's The Complete Origami Course
And the Pinocchio Nose is by Kunihiko Kasahara from his excellent Origami Omnibus.