what should i teach my bird to say??

so i am training my parakeet i recently got (we named him tupac!!!) i really want to teach him to say something, but i dont know what! he his a very moody bird who loves to play basketball!!! (one of his first toys was a b-ball hoop and he loves it!) PLEASE HELP!! I was going to teach him to say 'hey pretty girl' and my sister wants him to say 'pretty bird' but that is sooo not something he would say! lol i dont want him to sware either although i thought that would be soo cool!!! much thanks to those who help!