Oops, it doesn't look like 'act stupid day' is a national day..

Other days

nae nae

Nae Nae Day
bubble bath

Bubble Bath Day
gum

Gum Day
ask out your crush

Ask Out Your Crush Day
bonang

Bonang Day
bounce

Bounce Day
bow tie

Bow Tie Day
offer

Offer Day
hannah

Hannah Day
camera

Camera Day