You already wrote it chum.

-he steals my friends
-he makes fun of me behind my back
-he thinks that hes all that
-his friends thinks that hes sweet,but when there not there,hes mean.
-he lies alot.

-F U [NAAAAAAAAAAAAAAAAAAAAAME]!
F!
U!

(enter obligotory verse about how your father hates you and/or your girlfried dumping you so that the song will sky rocket up the billboard charts.)

Seven Dust's Enemy would be a good inspirational template

Bipper