I work as a part time duty manager at a supermarket while I study at university. Basically this means anything the store manager or the 2IC doesn't want to do gets shoved on my plate and I only work in 5 hour closing shifts.

Anyway on quietish days I chat with a few people. But lately people keep trying to socialize with me when I'm busy doing shit. Different from "hey hows it going" etc. 

I honestly give one or two word answers and hopefully they get the hint that I'm not fucking around. But lately people have been getting shitty with me (Act all pissy when I try to actually talk to them later.) 

I kind of feel bad, but when I go to work I'm in the 'get shit done' mode. 

AITA?