The Metamorphosis - Franz Kafka

Poor Gregor Samsa. This guy wakes up one morning to discover that he's become a "monstrous vermin".

As he struggles to come to terms with his new body, he realizes that he's (gasp!) late for his job as a traveling salesman. First his mother, then his father and sister, knock on his bedroom door in an effort to get him out of bed. His supervisor, the office manager, arrives to inquire about his absence. With his parents pleading with the office manager outside his bedroom door and his sister sobbing in another room they're upset because they think he's sick or shirking his responsibilities

-Gregor manages to crawl to his bedroom door, open it, and reveal to everyone his shocking new buggy form.