A dog that has been trained to have sex with humans.featured in some kinds of porn and sometimes brought to an orgy as a curosity or to make it more kinky or as a pet for a pervert ect.
Guss what John's got one of those sex trained dogs.
by Deep blue 2012 December 1, 2009
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aka TYD aka Train it aka you just got trained...means to get embarrased (corrected, yelled at, humiliated) in front of multiple people... possibly at work, however the origin of the phrase comes from a drunk "Billy" after a long day of drinking
Did you see Billy train Johnson's dog...

I will train your dog bitch!!

by Billy Billski May 27, 2008
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