It's the stress.
From Church Militant, January 13:
Francis Shocks Seminarians With Obscenities
Pope goes off script and uses f-word in remarks to Barcelona ordinands
VATICAN CITY (ChurchMilitant.com) - Seminarians from Barcelona say they were scandalized when Pope Francis reportedly used the f-word and other expletives at a papal audience in Rome.
According to testimonies from the seminarians, Francis ranted against "f***ing careerists who f*** up the lives of others." The pope criticized "those who climb to show their a**," the Italian media outlet Daily Compass reported on Monday. ...
....MUCH MORE
