Final answer:
In 'Truth as Told by Mason Buttle', Matt Drinker calls Mason and Calvin derogatory names, indicative of the bullying Mason faces and overcomes in the story.
Step-by-step explanation:
In the book Truth as Told by Mason Buttle, Matt Drinker uses unkind terms to refer to Calvin and Mason. While the exact terms are not specified in the provided excerpts, it's clear that within the narrative, Mason deals with bullying and name-calling from peers like Matt Drinker. Through the story, the themes of friendship, acceptance, and overcoming adversity are explored as Mason works through his struggles, including the negative labels others may try to place on him.