I can tell mine to dance and he does it.
I can tell mine to count to 10 and he does it.
I can tell him to throw away his brother's diaper and he does it.
I can tell him to stop standing on the arm of the couch and he looks at me and says "huh" like I am speaking a different language.
Welcome to the terrible two's and I think it lasts till they are adults. All three of my boys started that phase of tuning mom out when I said no about that age and to this day if I say no I swear I am speaking martian.