Dad behind amazing father-daughter photo series shares his secrets

When Dave Engledow took a funny photo of himself as a sleep-deprived new dad, holding his baby daughter like a football while squirting her bottle of milk into his "World's Best Father" coffee mug, it was meant as a joke for family and friends. But the photo got such a reaction and his follow-ups were so popular that his one-time joke became a regular hobby, an online sensation -- and a great father-daughter bonding experience. Engledow and daughter Alice Bee, who will turn 2 in December, visited TODAY on Thursday to talk about the photo sensation. Engledow said the overwhelmingly positive response from around the world has been gratifying. "I received a really wonderful email last night from a college-aged woman who said she's never been able to find anything for her dad for his birthday and this year she thinks she's found the right present, which is one of our calendars," he told TODAY's Matt Lauer. Alice Bee is just starting to understand the photos, which are currently a viral