Thinking the roomie's washer/drier wasn't drying that well, I opted to see about cleaning the (presumably present) lint filter. And there it was, beneath a flap, and unscrewed easily. Pulled it out, and.. well.. it's about eight inches long, slightly flattened circular cross-section, curving around somewhat, tapering off towards the end to a blunt tip.

Oh, and there were two tiny spherical BB pellets inside as well.

Usually, lint filter cleaning doesn't make me giggle out loud.