Top Definition
Either the most amazing troll that has ever existed, or the devolution of humanity. Also known as MandaSwaggie. Is convinced that she will one day have Justin Bieber's babies. Was obsessed with losing her virginity before the age of 14, which failed. Has dissed:
-Kurt Cobain and Nirvana
-Michael Jackson
-Freddie Mercury
-Lady Gaga
-Selena Gomez
-Black people
-Countless Twitter users
-and many more

Amanda Bieber has become an extremely hated figure of the internet.
Josh: Oh my god, it's Amanda Bieber!
by CFBDHP July 03, 2012
A reason to use a condom.
"Damn.... Amanda Bieber's parents really screwed up. Do you think it's too late to have an abortion?" Nate asked.

"Nah, if the parents gave birth to that, they never heard of an abortion." Dan replied.
by AnInternetUser March 08, 2013
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