A man walks into a Scottish Pub...

A man walks into a Scottish Pub and in it are only two people, the bartender and an old Scottish man. He orders a pint and sits next to the old man.
The old man starts talking and says, "I built this bar with my bare hands, I built this bar more carefully than I raised my own child but does anyone call me McGregor the Bar-Builder? No." The old man points out one of the windows at a Stone Wall. "You see that stone wall? I built that stone wall. I picked out each brick carefully and laid it. But does anyone call me McGregor the Stonewall-Builder? No." He points out another window at a pier on a lake. "You see that pier? I built that, too. I went into the woods and carefully picked out trees and cut them down and used the wood. But does anyone call me McGregor the pier builder? no." The old man stands up with anger and shouts, "But you fuck one goat!"