noun. informal. An affectionate term for a dog or puppy. 'these puppers are still in training'

What is Pupper slang for?

Doggo and pupper are affectionate terms for dog and puppy used in the internet slang called DoggoLingo.

What does puppers mean in Letterkenny?

A pupper is a simply a puppy or any dog in the variety of Internet slang known as DoggoLingo; a drawing of a golden retriever features prominently on the label. Puppers was entirely fictional at the release of Season 2, on Christmas Day, 2016.