During the 70’s they took part a sustained campaign of sustained grumpiness and 'arsey post-it notes'. Gerry Adams admitted to willfully slamming doors in the Northern Ireland Assembly. While the IRA regularly used the phrase 'fine - whatever!'.
This technique was said to have backfired during discussions on Irish unification, when they accidently muttered: ‘Right, we'll stay, does that make you happy?'.