Taking place at the White House, Obama was asking the children what they would like for Christmas when a boy piped up he wanted Nintendo's latest console.
"What's a Wii U?" the First Lady asked.
The boy responded: "It's like a tablet... and you can turn on a TV show and still play."
"That sounds good," Obama said. "Didn't know anything about that!"
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Wii U launch titles - gallery: