You can't trip on them, you just get a quick head rush and buzz! Been around for years. You can buy them in most shops, the call them ' room odourisers' But that is defiantly not what they are used for! Used to mess with them when i was younger but the buzz soon wears off. They kill off a serious amount of brain cells off when you sniff them so don't go mental on them I believe they are well known and used in the gay scene. As it relaxes your anus. That is what Coachella told me anyway