An Irishman at work sees one of his fellow workers with a vacuum flask pouring tea from it and asks: " What is that?" His mate replies, "It's a vacuum flask, it keeps hot things hot and cold things cold." He adds, haven't you seen one before?" "No" replies the Irishman. The following day the Irishman returns to work with a brand new vacuum flask and upon seeing him his mate states, " I see you bought one then" "Yes I did" says the Irishman. "What have you got in it?" asks his mate, to which the Irishman replies, " Coffee and two ice creams