A lot of talk about great places to masturbate got me thinking: Besides saliva (duh?), what are other things you've used for lube when a conventional tube o' lube (for the Irish contingency) wasn't available? Shampoo, hand soap (I'll tell you up front - don't get it in the slit...), etc. Heard about a guy that used peanut butter once (I assume creamy, not crunchy). Other ideas or things you have or would like to try? Can't always have lube in work desk drawer or in gym bag!