basically a term used to describe an individual who does not do his fair share of work (eg. walking around talking, smoking, whatever else, but avoiding doing any actual work)

a person who "fucks the dog" or is "dog fucking" is

Fucking of at work.
see Milking the clock.

someone who fucks dogs

aka whitney wisconsin

some one who does sexually things to dogs

someone who engages in sexual intercourse with canines.

someone who intentionally or unintentionally makes themself look like there fucking their/a dog

someone who intentionally or unintentionally makes themself look like their fucking there/a dog.