Nickname for your sister when she's acting like a turd.
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 July 17, 2008
your little sister who always gives you shit. Being the the older sibling gives you the authority to call her a turd.
My sisturd was bitching to me all night, so i threw her cat out the window.
by t3pf May 26, 2009

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