A crappachino involves taking a shit and then mixing it with milk in a shaker bottle. Then, you put the mixture (which should be a light tan/brown) in a iced starbucks coffee "frappachino" bottle (or a similar iced coffee drink) and attempt to give it to someone, claiming that you bought this and did not want it.
Rolly and Preston gave a crappachino to the newguy in our platoon.
The deliberate act of 2 gay lovers purposely eating exlax chocolate to get diarrhea, and then excreting hot foamy runny shit into fancy porcelain cups then consuming each others own hot personal recipe.
Harold: Hey Freddie baby I'm in the mood
for a hot tasty treat!
Freddie: And what are you craving this time my little Perez Hilton.
Harold: Oh.. You big silly! Break out the exlax, I want another steaming hot cup of your special Cleveland Crappuccino.
A substandard, overpriced copy of an Italian beverage usually found at a Starbucks or Tully's and served by overzealous workers obviously inflicted with caffeine dementia.