A badass and
brutally honest way of saying "I won't repeat myself".
No, it doesn't mean you're a pussy when you say it (to the definition above). A pussy would give excuses and try sugarcoating it, after his victim says "what did you call me".
After you say "
you heard me", your victims just
shuts up and looks shocked, beaten and despaired.
-Dad, I'm attracted to men.
-What the fuck did you just say?
-You heard me.
PUSSY COMEBACK:
-Dad, I'm attracted to men.
-What
the fuck you say?
-I mean, I sort of like men. They are just... Uh, it's not a
big deal, right? *
scared face*