Click here for comprehensive coverage of the sudden loss of Bob Barry, Jr.

So is it “St. Paddy” or “St. Patty”?

St. Paddy's Day parade Jeeps.

Million of Irish heritage and wanna-be Irishmen are taking advantage of this holiday.

And to celebrate, some are giving others a spelling lesson.

It is St. Paddy or St. Patty?

Some Irishmen compare “Patty” to nails on a chalkboard.

It angers them and sometimes even makes them want to fight.

Here are a few rules to remember: 

It’s Paddy, not Patty. Ever!
Saint Patrick’s Day? That works.
Paddy’s Day? Sure, dead-on.
St. Pat’s? If you must.
St. Patty? No, never!

Why? Paddy is derived from the Irish word “Pádraig,” the source of those mysterious, emerald double-Ds.

There isn’t a native to Ireland that would ever refer to a Patrick as a “Patty.” Ever.

It’s as simple as that.

MORE: Info from PaddyNotPatty.com