When it comes to food, Omega is pretty much of the opinion that some things are yummy and some are yucky. Pretty easy for a 2 year-old to grasp. We also try to impress upon him that poopy diapers are undesirable. We often find ourselves chasing after him while telling him that poopy diapers are yucky and need to be changed. As he runs from the dreaded diaper change, he proves how much he doesn't want his diaper changed and how quickly toddlers can apply concepts by shouting, "NO! Poopy diapers are *yummy*!"