I learned the lesson of not using aftershave or soap of ANY kind as a lube (my dick hurts just thinking about it
) the hard way. A bit of toothpaste mixed with lotion works really well, though.
I don't like the idea of jacking off in bathroom stalls or anywhere else public, but there were several occasions when i would get bored on a road trip and jack off while driving. Takes me forever to get off since I can't really get comfortable, but it's a fun way to pass the time.
My riskiest jack-off was at a warehouse job I had earlier this year, sitting in a corner, out of sight behind my forklift. since it was such a huge place, I didn't have much chance of getting caught, but I was still nervous. I'd been wanting to do it all day, and finally couldn't stand it anymore, so I just went for it.