He's rude to him because he doesn't like people that are bigger than him
"For a moment Crooks did not see him [Lennie], but on raising his eyes he stiffened and a scowl came on his face."
Crooks stiffening shows that he feels a little threatened by Lennie's presence - he is becoming defensive and ready to react to any attack Lennie might start. The scowl on his face shows he is doesn't want Lennie there and is trying to ward him off by being uninviting.
To me it also shows he doesn't want to be disturbed and just wants to be alone in his room, tending to his back and reading all his books, as this is what he is used to and has come to accept. This un-ordinary occurrence makes him suspicious as normally white men do not enter his room.
"Crooks said sharply, 'You got no right to come in my room. This here's my room. Nobody got any right in here but me.'"
This again shows he doesn't want Lennie there. Crooks shows distrust towards him.
Crooks is suspicious of Lennie because he doesn't understand Lennie's mental disability and is wary of his size and strength. Lennie confides in Crooks the dream of owning a farm with George, but Crooks initially doubts the feasibility of the dream due to the racism and discrimination he has faced throughout his life.
No one ever ;lts him in and he is completely isolated so is bitter. He has good reason to be mad but let's him in because Crooks is nicer and really wants company. He realises Lennie is no harm.
Lennie goes to see Crooks because he is looking for his puppy. Crooks lives in a separate room in the barn, and Lennie wanders in looking for his lost pet.
Crooks initially reacts negatively to Lennie because he is used to being ostracized because of his race and doesn't want to get his hopes up about fitting in. However, he ultimately lets Lennie in because of his vulnerability and need for companionship, which is something he can relate to.
Crooks tells George that Lennie is a nice fella because he recognizes Lennie's genuine kindness and innocence. Despite Lennie's mental disability and social awkwardness, he doesn't have any malice in him and treats others with kindness. Crooks appreciates Lennie's sincerity and straightforward nature.
The boss punished the stable buck, Crooks, when George and Lennie were late. Crooks was reprimanded for not completing his work in a timely manner.
Lennie ends up with Crooks because he wanders into his room while looking for his puppy. Crooks initially resists Lennie's presence but eventually allows him to stay and confides in him about his loneliness due to his race. Later, when Curley's wife enters the room, she taunts both Crooks and Lennie, which leads to a confrontation where Crooks is forced to defend himself and his space.
Crooks' first reply to Lennie telling him about the land is skepticism, as he is not convinced that George and Lennie will actually be able to achieve their dream of owning a piece of land. He questions Lennie about the feasibility of their plan and whether they truly understand the obstacles they may face.
Lennie is one of the few people that Crooks has power over. Lennie had just trespassed in Crook's room. Crooks is teasing Lennie, because he knows that Lennie depends on George to make every decision for him. When Lennie thinks this is true, he gets really worried. Because he is gulible, he believes him so easily.
Lennie is one of the few people that Crooks has power over. Lennie had just trespassed in Crook's room. Crooks is teasing Lennie, because he knows that Lennie depends on George to make every decision for him. When Lennie thinks this is true, he gets really worried. Because he is gulible, he believes him so easily.
Crooks begins to tease Lennie, in that he begins to upset him by telling him that George might not come back. This upsets Lennie because George is the only person he has, and also Lennie feels secure with George by his side. Crooks also teases Lennie due to the racism evident in society during that period. Lennie presents himself as a vulnerable character before Crooks and so he pounces at the opportunity to upset someone else.
His second visitor tells Lennie about a land they can own and work on together, just like George and Lennie had dreamt of. This reminds Lennie of the conversation he had with Crooks where Crooks had pointed out that most guys have similar dreams of owning land, but they rarely come true.