May the Road Rise to Meet You-- From the Gaelic, Go N-eiri an bothar leat, which means may success be with you.
Top of the Morning: Hollywood invention, never used in Ireland.
And the rest of the day to yourself --Also Hollywood.
Slainte: means Good health ---Slainte is the Gaelic word for health.
Slan meaning farewell Slan is the Gaelic word for safe so it means keep safe.
Erin go Bragh -- Means in Gaelic "Ireland forever."
A Hundred Thousand welcomes -- from the Gaelic Cead Mile Failte which means literally that.
Dia is Muire Dhuit: Means hello in Gaelic, literally means "God and Mary with you."
Dia is Mhuire Duit agus Padraig; How the person responds,"God and Mary and St. Patrick with you."
Pog Mo Thoin --Yes it means what you think it does, Gaelic for kiss my ...
La Fheile Padraig brea dhibh go leir -- Have a great St. Pat's everyone