(Sh-ih-stir) noun;
a young female sibling (alternatively a sibling of any age who acts like a female child) and they just wonât stay out of your fucking stuff and you arenât normally an aggressive person but no matter how much you live someone you canât help but wanna grab their legs and sling them across the fucking room. You work 40 hour weeks in a warehouse starting the day you turn 18 but you arenât allowed to have your own room? Fuck you
âHey shister, what the FUCK are you doing destroying my room again!?â