Ah, the Irish

Two businessmen in London were sitting down for a break in their new store; as of yet, the store wasn't ready, with only a few shelves set up and no inventory. One said to the other, "I'll bet that, any minute now, some idiot tourist is going to walk by, put his face to the window, and ask what we're selling."
No sooner were the words out of his mouth when, sure enough, a curious gentleman walked to the window, had a peek, and, in a thick Irish accent, asked: "What might ye be sellin' here?"
One of the men replied, sarcastically, "We're selling arseholes."
Without skipping a beat, the Irishman replied, "You're doing well, then... Only two left."