Oops, it doesn't look like 'contort your face day' is a national day..

Other days

unicorn

Unicorn Day
self appreciation

Self Appreciation Day
boy friend

Boy Friend Day
tell a fairytale

Tell A Fairytale Day
ruby

Ruby Day
emoji

Emoji Day
chocolate milkshake

Chocolate Milkshake Day
ormille

Ormille Day
girl friend

Girl Friend Day
gum

Gum Day