Sorry, I typed the second line wrong in the chorus. Should be:

Ó bhí mé ann agus tiddlywinks, this is macaronic
Aililiú I’ve the flu, [me ??] that’s ironic
Dá réir muna thuigeann mise o[?] the plague is cuts bubonic
Nach tusa a bhí [?] [cocky?] on the midfielders, they’re pussyfoot moroni