Edited sentence: In another, he's a crocodile floating like a log towards an "unsuspecting hippo", which turns out to be his dad asking if he's okay as he floats motionless in a pool.In one, he is a shark looking for prey, and at the last panel he's in the bathtub.Or, in another, the imagined plot describes toys he's playing with.So, in one particular strip, a "creature" turns out to be his teacher.What was particularly novel and always interesting was the manner in which Masterson deployed this tool - through the strip, the reader is engaged in the character and the plot, and at the last panel we see the "reality" of the situation that Calvin was daydreaming about