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

Other days

polyamory

Polyamory Day
promposal

Promposal Day
youth

Youth Day
boy friend

Boy Friend Day
ruby

Ruby Day
ask out your crush

Ask Out Your Crush Day
pampering

Pampering Day
reading

Reading Day
unicorn

Unicorn Day
lash

Lash Day