Sometimes people come up with retorts so precise and delicate, it’s worth keeping them for future reference. This is one of those:
Worn any mixed fabrics lately? You may be in danger of stoning. Cotton and viscose? Wool and polyester? Other combinations? Check the tag on the neck of your t-shirt, sweater, lining of your jeans or whatever, and prepare to run like hell!
And on the subject, I might bring up an old classic, “Dear Dr. Laura”