What's so funny Dave? The White House has released behind-the-scenes photographs of the prime minster's meeting with President Obama on Wednesday, including one showing him rocking with laughter.
The snaps show Cameron negotiating with the US leader in the White House Cabinet Room, relaxing on the balcony with his wife Samantha and first lady Michelle Obama, and enjoying music from Mumford and Sons at a glitzy state dinner.
Cameron left the United States on Friday after a three day tour which saw him take in a basketball game in Ohio, enjoy a warm welcome in the White House rose garden, and visit the site of the September 11th attacks in New York.
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