I just got from his brother's mouth some information. It seems that Merc is just arrogant and he doesn't listen to any command past "Eat" and "Breathe".
Merc, you can ask your brother about that. You need to work on listening. Maybe go watch some Sesame Street or some other basic motor skills baby show. That should work.
(I have the same problem, but I have an excuse; I have a weird short-term memory loss thing.)