Gaeliboo
A person who yells 'I'm Irish!' at the top of their lungs and then forgets what they were talking about.
He shouted 'I'm Irish!' so loud the whole coffee shop heard him. Then he asked for a biscuit.
She yelled 'I'm Irish!' and then said 'What's a biscuit?'
He yelled 'I'm Irish!' and then forgot why he was mad.