One said to the other, 'I bet any minute now some thick 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 Scotsman walked to the window, had a peek, and in a broad Scottish accent asked 'What are you selling here?'
One of the men replied sarcastically, 'We're selling ar*e-holes.'
Without skipping a beat, the Scotsman said,
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