The stickiness found in laundromats. No one really knows, but it perhaps is a mix of laundry soap, dryer sheet remnant, dust, small human skin particles, etc. "DON'T TOUCH IT: IT'S EVIL!"
Xofu walks into laundromat with Jax. The mission is to do laundry (didn't see that coming) - - While there, they find the dreaded laundromat slime on the washing machines and even some of the dryers. (Haven't you experienced something grossly similar?!)