I mean, as I understand it ol' Patrick was a pretty conservative guy. So I'm going to go out on a limb here and guess that the whole "Kiss me, I'm Irish" thing was not his idea.
Apparently they needed all of the capital "I"s for "IRISH."
(And as we all know, the Irish hate apostrophes.)
- Related Wreckage: Funny
Update: Apparently, St. Patrick was actually Welsh. Or was it English? Ohhh... and then he was kidnapped by Irish pirates. But he later returned to England to marry Buttercup after many madcap adventures with a giant, a Spaniard and an angry little man with a lisp. Everybody clear? Good, good...