Convincing a 2 Year Old

Have you ever tried to convince a 2 year old that something they believe is not correct? Go ahead and starting beating your head up against the wall now because it is almost impossible!!!
OM and SK take turns picking the show that they get to watch each day, either while eating breakfast or while winding down before bedtime. OM usually chooses SuperWhy or Spiderman and SK will choose My Little Pony or Martha Speaks. There are a variety of othersmixed in but this is the norm.
OM has heard SK ask so many times for My Little Pony that while getting vitamins the other night SK said that is what she wanted to watch. I asked OM if "My Little Pony" was okay with him and he informed me "not your little pony. It's SK's little pony!!!" And then for 10 minutes (because it was so funny how serious he was) I tried to convince him that the name of the show was actually My Little Pony. SK just sat there and grinned shrugging her shoulders.
I love my sweet little man. Stubbornness and all!