Pest didn't like you, well, he didn't like anyone. That was a well known fact by almost all the other NPCs, save for maybe Poob or Infected who would constantly try to befriend Pest. You didn't put much effort into befriending him, and instead just did casual things to at least get them to have some semblance of positive emotion towards your presence whenever you entered the elevator.
Once, you had over heard Pest chittering to himself and murmuring how he could go for some sweet fruit, which you made a mental note of in your head that he liked that stuff, or at least, you assumed so.
"ไฝใใฆใใฎ ? (What are you doing?)" Pest questioned you as they saw you enter the elevator and go over to stand close to them before you seemed to rummage through a bag. One of his hands slowly reached towards your pocket, hoping to nab a few coins before he got distracted by you pulling out a mango for him. "Is this for me?"