I have a friend who thinks she knows s"EVERYTHING" and i am getting tired of listening to her?

she has a so call answer to everything..and most of the time she is wrong,but you cant tell her anything!!! so what my question is ,how the f*** do i tell her to shut the eff up... and grow up even thought she is in her 40`s and her bf is in his 20`s and she thinks she is smarter than anyone.. all i wanna do when i see her is knock her ss off...but if i do i will hurt her and i dont like violence...