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1.
1. A sex monster or fuckmonster.

2. A person with a monstrous sexual appetite.

3. A person with such a gargantuan sexual addiction so that it creates a disastrous lifestyle that can have catastrophic consequences.

4. An unstoppable sex drive. Like a Fuck Machine.

5. So focused on sex that they become oblivious to the rest of the world.
Just as Godzilla trashes Tokyo, a Fuckzilla can trash lives.

Like an unstoppable force of nature, a Fuckzilla does what it must right now, regardless of the future.
by The Spacer February 25, 2012
 
2.
The best fuck a guy can get.
Man! Did you see her tits? And that mouth? I bet she's got a TIGHT pussy too! She's a fuckzilla!
by Thlayli February 07, 2003