 Rockstar 101  is a hip hop song which last for three minutes and fifty @-@ eight seconds . It feature an " aggressive " guitar solo from Slash , according to Leah Greenblatt of Entertainment Weekly . Rihanna use her lower register and " heavy " modulation to perform the most of the song , and she " growl " the lyric " The only thing I 'm missing is a black guitar " . Rihanna " strut her stuff " as she insist that she is a " big shit talker " as she proclaim that " I 'll never play a victim / I 'd rather be a stalker " . Sean Fennessey for Spin thought that when Rihanna sing the line " Get my middle finger up , I don 't give a fuck " , it sounded as though she had never sworn before due to how she preciously mewls the word ' fuck ' .