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

Other days

gum

Gum Day
self care

Self Care Day
bonang

Bonang Day
nail polish

Nail Polish Day
tulip

Tulip Day
chocolate milkshake

Chocolate Milkshake Day
first love

First Love Day
stud

Stud Day
bounce

Bounce Day
mean girls

Mean Girls Day