def1.Girls in a friend group who act like they practically live together and cant ever be separated and have seen the worst of each other;since they arent actuly sisters they call themselfs shisters
def2.A veiwer of James Charles
def2.A veiwer of James Charles
by school.sukks October 20, 2018
Get the shistermug. a stupid thing many basic white girls say. if you say "shister", you are basic, and trying desperately to be cool. shister is like the female version of bro, but more cringey.
by stinkymamacita January 1, 2019
Get the shistermug. by Randy August 31, 2003
Get the shistermug. a word created by our queen james charles- I MEAN BITCH HE'S cANCELED AND SHANE DAWSON IS TAKING OVER.
by hanswuvs January 28, 2019
Get the shistermug. by Ivanna Humpalot December 17, 2004
Get the shistermug. 
