Why can't I be one?

Twilight wanted to visit pinkie to speak with her about the disappereance of Rainbow Dash so she went to shugarcube corner and wanted to enter the house as Pinkie already bounced out and asked,"Hey Twilight! Whats up?"

"I'm fine Pinkie but have you seen rainbow dash in the last time? Everypony is searching for her because she wasnt seen for two days."

Pinkie stood there and held a hoof on her head while she seemed to think about it,"Nope, I haven't seen here aswell but im sure everything is alright and she will be back soon from wherever she is! You can trust my Pinkie sense!"

"Yeah probably your right,but still I would like to know where she is…