The common area of the housing floor often had people passing through at odd hours. Some of the people were aliens. In this case, it was a big muscular greyish alien with red tribal scarification over the upper half of his body. These could easily be seen because he was shirtless, on account of his very sensitive nipples. Even harnesses chaffed.
In his hand was a bag of corn nuts. As he walked at a snail's pace, he would slowly place one into his mouth, and begin chewing. Slowly. But still audibly.
If he was slow enough, he was convinced he could become invisible. He tread quietly until he could stop near the center island, and watched as the young woman peeked into the cabinets. Another corn nut went into his mouth and his teeth clamped down on it as though gradually applying pressure.