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1.
A petpet is a pet that your neopet has.
MikeJonesofC_island has a petpet. His petpet is a Christmas Anubis.
by Alexi August 02, 2003
 
2.
1. Pussy in cantonese
2. Someone that is irritating enough
3. A fool
eg.
See Shio's pet pet face. He is disturbing the female dog again.

another eg.
Stop being so pet pet. Act properly please.

another eg on pussy.
Aiyoo.. how come her pet pet smell like sardine?
by Gonezilla September 13, 2007
 
3.
Small, sometimes expensive, pets for your Neopets on a virtual site that is fun to use. some people don't like it, but that's just an opinion.
I sell petpets in my shop for cheap!
by Casey Stark July 30, 2006