look up any word, like fluffer:
 
1.
A very strong dog that scares the crap out of you. Often found in crack houses.
He sicked his mean pet boo on the vice officer.
by Robert Bailey June 29, 2003
 
2.
A very scary viscous dog.
The pet boo almost cought me at the corner but I climbed the pole.
by Robert Bailey June 29, 2003