Bonding with his daughter is no problem for London Johnson. While most dads would scoff at dancing in the living room (and then filming it for millions to see), this father happily paired up with his 7-year-old daughter Lil' London and shook it to Ariana Grande [1]'s summertime hit "Problem." Though Johnson writes that his daughter made him do it, you can tell by his smile that he wasn't totally forced into it.