honestly i dont think anybody in the house im in woukld purposefully do this except this one new guy who moved in a month ago who i dont know very well, and while process of elimination would tell me its him, i cant conclude that, and it very well might not even be a resident in the house, but a friend or girl someone, or that dude, is bringing over(both he, and my other roomate, have people over semi-occasionally that end up staying the night). I know a possibility is that someone they invite over ends up sneaking down in the fridge for some quick food and sees my deli meat and cheese and helps themselves to a few slices not realizing its a big deal to me as i try to stretch those out over like 2 weeks, and I count slices and notice when anything is missing