Part 37 - Yawning
Yawning is an action applying to nothing.
Understand "yawn" as yawning.
Report yawning:
say "You open your face in a tongue-curling yawn."
Yawning at is an action applying to one thing.
Understand "yawn" as yawning at.
Understand "yawn at" as yawning at.
Report yawning at:
say "You yawn your entire face at [the noun]."