Oops, it doesn't look like 'avoid the scale day' is a national day..

Other days

lisp

Lisp Day
ruby

Ruby Day
hannah

Hannah Day
nae nae

Nae Nae Day
gum

Gum Day
ponytail

Ponytail Day
tulip

Tulip Day
special education

Special Education Day
carpenters

Carpenters Day
comfy

Comfy Day