So tired of my parents....?

ok im 13 and before you go saying "they are your parents and theyre trying to protect you" stuff listen please. they get on me for everything. like seriously, i posted on my facebook a picture of me and my little 7 year old sister and the captian was "my idiot sister(:<3" and my mom comes to me sayin "i was heartbroken when i read that you are so mean!!" like seriously they are just so odd?? theyll get on me for little stuff like that and they are embarrassing too. like my mom will sing and dance in public, my dad farts and burps in public, and dont say its to annoy me cuz they do it when im not there too...(says my uncles, aunts, grandmas, grandpas....) and like..my dad is so judgemental....how do i overcome this...:(