Oops, it doesn't look like 'Not Me Af day' is a national day..

Other days

aloxolt

Aloxolt Day
frozen yogurt

Frozen Yogurt Day
pumpkin

Pumpkin Day
lash

Lash Day
lisp

Lisp Day
cuddle up

Cuddle Up Day
nae nae

Nae Nae Day
comfy

Comfy Day
gum

Gum Day
kale

Kale Day