"Old Jack - thats mine" joke

Jack was a grumpy old man, who like's visiting pubs. He loved to tell people in the pub of all his belongings.
One night, old Jack went to a local pub. As the night get older, Jack get's drunker.
One of the locals there, offered him a lift to his house.
He invited the man into the house. Jack asks the man, "Do you see that lamp?"
"Yes" the man replied.
"Well, that's mine. Do you see that carpet?"
"Yes."
"Well that's mine."
Old Jack show the man everything and make him aware of all his belongings. They finally came to the bedroom.
"Do you see that bed?"
"Yes."
"Well, that's mine."
"Do you see that women on the bed?"
"Yes."
"Well, that's mine."
"Do you see the man next to her?"
"Yes Jack, I see!"
"Well, that's me."