This is actually a slide show about meth and its effects. It also shows some of the signs to look for in a meth user such as dilated pupils and irrational behavior.
Personally, I always knew when my ex-husband was high because his pupils were as big as saucers. One tell-tale sign it doesn’t talk about in this slide show is teeth grinding. I have yet to come across a meth user that doesn’t either grind their teeth or do something strange repetitively with their mouth. Although the slide show doesn’t mention teeth grinding specifically, it does show the effect meth has on one’s mouth. The term has been coined “meth mouth” because the teeth of users are often rotten and ground down/broken to practically nothing after long term use.