Oops, it doesn't look like 'shoot yourself day' is a national day..

Other days

lash

Lash Day
stud

Stud Day
bow tie

Bow Tie Day
ask out your crush

Ask Out Your Crush Day
one

One Day
martini

Martini Day
ruby

Ruby Day
boy friend

Boy Friend Day
chocolate milkshake

Chocolate Milkshake Day
lisp

Lisp Day