I'm Different At School Than I Am At Home

i act so different in school like sometimes im quiet and i dont say much unless im talking to one of my best friends or something but when i am at home Ghe I'M A WHOLE DIFFERENT PERSON Like i act goofy and when i run i run on all 4 like i am a dog i be chasing after my little sister i chase after my dog with unopened bottles of water and its funny becuase she takes off because she thinks im trying to give her a bath