Is it harassment?

I work in a warehouse of a supermarket of a hardware store. We have guys with forklift license, I myself don’t have it and I don’t need it. I hope I will not, because it’s terribly noisy. One colleague finds it funny to honk on me with the forklift and watch me jumping scared. He literally scares crap out of me! And he laughs. His fun costs me hiding and crying like a child. And I still feel bad. And all of them make terrible noise and mess around they are like a whirlwind, they talk to me make some jokes, when I’m working with the shipment letters and I need to concentrate. It’s so terribly stressful! I don’t know if I can hold down this job. There is one guy, by his style of interactions with people I would say he might be an aspie, but I don’t know him well. Anyway working with him is pleasant because he is quiet and does not talk any bs, does not make stupid comments on others, we just give each other the relevant information and each of us does the job. With him I’m less likely to make mistake because it’s silence and no pressure. The saddest thing is that tomorrow is his last day. I’m new here so I don’t know the reason why he is leaving but knowing that I will be left alone with the whirlwind makes me even sadder. I also feel bad because with the whirlwind of my other colleagues I confused two separate deliveries. I’m so sorry I’m not even sure if I want any advice just wanted to share the story.