get out of my purse!

excuse me, but if you are ever in line behind me some place where i'm conducting a financial transaction (even if it is just purchasing a tall, soy chai) give me some space. i don't know you. respect my bubble. you should not be even close enough to touch me while i have my hand in my purse. but never mind that, if we aren't friends, i don't want you within whispering distance. ever. unless maybe we are in a v. crowded subway train or elevator at 8:55. this is america, we have room.