Oops, it doesn't look like 'Heave Your Guts Out day' is a national day..

Other days

bounce

Bounce Day

brow

Brow Day

chocolate milkshake

Chocolate Milkshake Day

nae nae

Nae Nae Day

boyfriend

Boyfriend Day

Me Day

pick me

Pick Me Day

unicorn

Unicorn Day

special education

Special Education Day

singles

Singles Day