Oops, it doesn't look like 'made up ass day' is a national day..

Other days

fiancee

Fiancee Day
pick me

Pick Me Day
lash

Lash Day
aloxolt

Aloxolt Day
special education

Special Education Day
ruby

Ruby Day
bow tie

Bow Tie Day
polyamory

Polyamory Day
stud

Stud Day
hot chocolate

Hot Chocolate Day