My Dads Friend Is Stalking My Facebook And I Don't Know Who He Is?

So I Had Typed Part Of A Song That Said "I Hope His Car Skids Off The Road And Explodes" Yesterday And Today My Dad Came Home And Told Me His Friend Told Me About It His Friend Lied And Said That I Was Talking About My Dad And He Told My Dad That I Hate Him And I Don't It's Just A Freaking Line From A Song People Update Lines From Songs All The Time As Their Status And I Think My Dad Got His Friend To Watch My Profile Because My Dad Was Stalking My FB At First So I Blocked Him So I Think My Dad Told Him To Stalk Me And I Think He's In My Friends List But Idk Who He Is Now My Dads All Depressed And I'm Probably Going To Get In Trouble When My Mom Gets Home So How Can I Find Out Who My Dads Friend Is And Block And Report Him Or Stop Him From Seeing My Profile And Statuses Also How Csn I Convince My Dad Their Just Lyrics From A Song