When your dog is in the park and his teeth start to chatter because he just had a great gulping slurp of another dogs champagne piss and is unequivocally higher quality than regular park piss.
Martha: Hello there Terry, oh what's up with Rover? Is he cold? His teeth seem to be chattering horribly.
Terry: Oh nah luv, he's just gone and had himself a sampling sip of Champagne Piss ain't he.
Martha: By gosh.
When you get some poo into your dick hole and then use piss to push it out. The poo on top of the piss is like the cork on a champagne bottle and the pee is like the champagne hence why it is called a champagne piss
I accidentally got my dick stuck in some shit so I had to take a champagne piss