This example was given in another post: I spilled beer on myself. = Polil jsem se pivem. I spilled beer on my shirt. = Polil jsem si pivem košili. There is one thing I am still not absolutely clear on and that is when to use "se" and when to use "si." I know that se is reflexive and used when referring to yourself, but what about si? Is there only one rule regarding si or many? We've talked about this in our czech class before, but it just never soaked in. :? Thanks so much for any insights you can give me!