1 definition by The leet gangster

STFU means "Shut The fuck up!!!!!" normally said to people who are very annoying or just won't shut up.. Used also a lot to people who don't know what it means
Your mom: hey come do your homework!!

You: no, mom

Your mom: yes!

You: STFU mom I'll rape you
by The leet gangster October 29, 2007
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