That Point Carries More Weight

(My (female) friend has led quite a sheltered life before she met me, and often turns to me as more the experienced person. We have just watched the Breaking Bad pilot episode.)

Friend: “So… what does crystal meth really do to you?”

Me: *trying to be safe* “It´s really not a good stuff to take. It can cause insomnia, neurosis, shaking, loss of teeth, damage to skin and hair, drastic weight loss, impotence, dementia, and death.”

Friend: *eyes lights up* “Really? It causes weight loss?”