Courtesy of Auntie Shelia, Ronan's moniker when he's disrobed is Booty McLackin'. Why? Because Ronan is, in fact, lacking booty (hey, it's not Dad's fault).
True, Ronan does not have much of a bum but what he misses in cushion he makes up for with flair. For instance, Ronan grabs his glutes when we ask, "where's your bum?", and he knows that his "bum" goes on the "seat". Also, Ronan "shakes his booty" when it's Friday (Mom's song) and/or The Traveling Willburys are playing on the radio.
Freeing little cheeks everywhere. At least those on the starboard side...
Finally, Ronan is one of the few babies who attempts to turn his diaper into a g-string. It's funny that a bum so small can actually "hang out" of a super absorbent diaper. And it's always that pesky right cheek. Thankfully, though, he's currently too skinny to be able to sport a muffin top.