Boyo; boy, child, or son

Ceann; one 

Ceithera; four

Craic; a good time

Daidí; dad or father

Dhá; two

Dry Shite; kind of like boring shit or bullshit

Eejit; idiot or moron 

Maiméo; affectionate word for grandma 

Merrowmaid/Merrow-man; another word for mermaid

Muppets; silly people

Not the full shilling; slow in the head 

Oul Fella; old man

Thick; stupid