A picture of Barney posing with his fake wife (Brooke D'Orsay) and his fake son (Angelo Diona) that he hired to impress his mother when she was sick.
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A picture of Barney with his mother Lauretta (Frances Conroy). Barney has been lying to his mother and telling her he's married with a kid.
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The gang sits around as they talk to Barney in "The Stinsons." They have a whole lot to discuss when Barney tells them about his wife and kid!
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Marshall, Ted, Robin and Lily all stand outside the house in "The Stinsons." In this episode, the guys meet Barney's wife and child they never knew existed.
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How I Met Your Mother Season 4 Episode 15 Quotes

Ted: Where does this woman live?
Robin: We're talking about a woman that actually Barney Stinson to commit, I'm guessing Narnia

Woman: You said that if I slept with you my son would get the part
Barney: Well apparently I'm a better actor than your kid