Ulcérer: Literally, to give someone an ulcer. Figuratively, to piss someone off.
As seen in: « La décision du ministère des Transports du Québec (MTQ) de fermer les voies de circulation du pont Mercier en direction sud sans préavis en a ulcéré plus d’un hier. »
(Translation: “The decision of the Quebec Ministry of Transportation (MTQ) to close all southbound lanes of traffic on the Mercier Bridge without warning pissed off several people yesterday.”
http://fr.canoe.ca/infos/quebeccanada/archives/2011/12/20111230-075023.html
