Pool report quotes Biden as saying "I spent half my life on OUR national security council." Not true. Only 4 years. May have seemed longer.—
Mark Knoller (@markknoller) February 05, 2013
For what it’s worth, the AP reports Biden’s remark to British Prime Minister David Cameron this way:
The U.S. vice president said he was “delighted” to take part in the British meeting since he spends “half my life” at U.S. security meetings.
PolitiFact rates this statement “Squeeeee!”