It means that if you do something that you know is wrong you an expect consequences. Just like if you sleep with a hooker you will get up with an std. If you drink all night you will wake up with a...
it means if you hang around bad people you will follow then and become how they are
This often mean the dog is in heat and is kinky for somea ction. Drop down and take off your pants and let the dog do all the work.
The dog is displaying complete trust and submission to its owner.