Dad is Vindicated

So, Josh caught a bunch of crud (literally) when he was holding Kaleb a couple of days ago and Kaleb exploded the diaper that Josh had put on him. But Josh just called up the NICU to check on Kaleb during the hurricane, and he found out that he's not alone. Not only did Kaleb blow out a diaper the nurses had strapped on--he did it so violently that the nurses had to scrub down the walls of his isolette!

Speaking of, what exactly do you think Kaleb is doing here?