Oisin McQuinn, from Ahenny in South Tipperary found himself in a spot of bother after invading the pitch during France v Switzerland.
McQuinn painted himself in the French colours and drew on a moustache, along with the words 'Eiffel Tower' and an arrow to his penis, before making a run to the pitch.
The Irish Times report that he spent three hours being questioned by Brazilian police. McQuinn has been touring South America and is a student in University of Limerick.
Paul Pogba et un streaker sur la pelouse du stade de Salvador pic.twitter.com/H0CNxYIrpW par @FranckFife #CM2014 #AFP
— Agence France-Presse (@afpfr) June 20, 2014
After the whole event he took to Facebook to reflect on the day.