pure-o means like you obsess over really inrtusive disturbing thoughts of for example mine are either me doing bad things to people in my sleep or people doing bad things to me in my sleep and the thoughts become all i can think about over and over over and i associate them with a certain object or word and when isee that word phrase or object i freak out and i'll start obsessing and/or praying about it again. i also arrange things on the floor in my room over and over in a certain way so that if i were to get up or sleepwalk or do something like that i'll trip and falla dn either wake my self or someone esle up. and then when i wake up in the morning i check the florr over and over to make sure that nothing i put there the night before was moved. i also don't like to touch anything that is unfamiliar or foreign b/c i have an overwhelming fear of contracting HIV so if i do touch something wierd i'll check my hands and body over over for signs of illness or blood or anyhting out of the ordinary, i check them until it feels right. i also make sure the bedroom door is locked everynight by touching it over and over. just things like that but the pure-o type really is purley obsessing over intrusive thoughts that to start out with i know there out of reality but i cna't help but worry and obsess over them.