Oops, it doesn't look like 'cheese pizza tailgaiting day' is a national day..

Other days

boyfriend

Boyfriend Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
cuddle up

Cuddle Up Day
buddy

Buddy Day
azonto is acceptable

Azonto Is Acceptable Day
prescription drug take back

Prescription Drug Take Back Day
boy friend

Boy Friend Day
eat what you want

Eat What You Want Day
hiv awareness

Hiv Awareness Day
embarrass your best friend

Embarrass Your Best Friend Day