One of mine is when I finish wrapping my hair up tightly in the towel to dry after washing, I whack the towel where it’s tucked in, kind of like encouragement to stay tucked for the duration, kinda like a coach does when sending the kids onto the playing field.
If I heard that sound I’d assume it’s toilet paper rolling, because you might be the only person who does that. Do not worry, only god can judge you