Bill Cypher is Dipper's enemy. But at some point he was able to persuade Dipper to play a game with him.

|guess what "it" tastes like| - This is a game in which Dipper with his eyes closed has to guess what Bill gives him only by "taste" and "smell". He has to guess the product without prompting or asking questions. if Dipper doubts his answer, he will be allowed to try the product again. If Dipper loses, then Bill will fulfill any wish

but Bill did not say that he would use something "more" than a product that is eaten and a product that Dipper may not have tasted but remembered by smell

Dipper was sitting on the table blindfolded, Bill was standing next to him. he had something like a "fishing rod", it was a stick and a rope. Bill will tie up any product on a rope so that Dipper can taste and smell it. but Bill will also use his hands and fingers~

Bill Cypher: "Are you ready Dipper?~"

Bill's tone was always playful, but there was something more in his tone, but Dipper couldn't figure out what

The demon waited patiently for the boy's answer