I wasn't sure what section to put this topic in so I hope this was a good choice This is probably a stupid question but I was just kinda curious... I was watching the movie "Crooklyn" the other night and in the movie there are two kids that like to "huff" glue from a brown paper bag. Every time you saw these kids in the movie they had a thick and shinny residue around their lips. I was just wondering if that really happens and if so wat causes it??