Ok. My brother is straight annoying me. What to do?

Ok, I am the responsible one in my family. I am 21 years old, going to college and I also have a job at college. I take out the trash all the time, take care of the family dog, etc. I am the exact opposite of my 27 year old bro who's been living here, doesn't have a job or anything, smokes (which I have never done), he's drank before (admittedly, not a lot but I NEVER have), he's got all these issues with relationships and stuff. Anyway, he doesn't do chores except a couple of times dealing with the snow. Anyway, my dad brings to subway sandwiches home because I have been asking him for it. Anyway my brother merrily comes along and just takes the other. This, after I did the dishes. Note, I barely ever use our dishes yet I did them today because NO ONE else in the house would bother to lift a finger to do them and I took out the trash too. I don't know, maybe this goes deeper than this subway sandwich, but my god!