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

Other days

singles

Singles Day
artists

Artists Day
cat girl

Cat Girl Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
gum

Gum Day
nae nae

Nae Nae Day
tulip

Tulip Day
hannah

Hannah Day
youth

Youth Day
kale

Kale Day