SAN FRANCISCO (AFP) - A video of a pair of diaper-clad babies seemingly engaged in an animated conversation in a home kitchen was a fast-spreading YouTube sensation on Wednesday. The two-minute snippet of the lively exchange between twin brothers barely old enough to stand has been watched more than 2.2 million times since it was uploaded to the Google-owned video sharing website on Valentines Day. The then 17-month-old boys laughed, gestured, and raised their feet during what appeared to be a baby talk chat so genuine that it inspired viewers to add playful captions suggesting translations. Suggestions included that one brother telling the other That diaper is so 2010 and getting a retort along the lines of If youre so smart, where is your other sock, Einstein?