Oops, it doesn't look like 'Watch Your Back day' is a national day..

Other days

bounce

Bounce Day
blanket fort

Blanket Fort Day
tell a fairytale

Tell A Fairytale Day
tulip

Tulip Day
martini

Martini Day
buddy

Buddy Day
boyfriend

Boyfriend Day
self appreciation

Self Appreciation Day
chocolate milkshake

Chocolate Milkshake Day
self care

Self Care Day