A hasty arrival to a gathering made without previously confirming attendance or without invite with the intent to be cheeky or a rabble rouser. An Irish Hello is most common among groups of friends and old man sports clubs where competition and camaraderie are most valued.
Joe pulled an Irish Hello at happy hour wearing a beard and telling soccer jokes. The entire group was flabbergasted.
by OldManSportsClub January 24, 2025
Get the Irish Hellomug. 
by I'm bored so I wrote that November 11, 2022
Get the hello Peter welcome to fortnitemug.