your little sister who always gives you shit. Being the the older sibling gives you the authority to call her a turd.
by t3pf May 26, 2009
Get the sisturdmug. Sisturd, don't be peeved because I called you out for not contributing your fair share for Mom and Dad's birthday gifts. It's not my fault you smoke all your money.
by becsmoneybooty August 11, 2008
Get the sisturdmug.