v. The act of watching a DJ work with turntables and vinyl. This can be done to see how the DJ scratches, beatmatches or in any other way show off for the crowd.
Guy 1) What now you're a wallflower?
Guy 2) Just a little train spotting.
Guy 1) Look at that DJ spin!
The act of scissoring, clit-clatting, bumping fur, polishing mirrors, or tribadism when two women rub vulvas to stimulate each of them simultaneously. A lesbian sexual practice. It's the lesbian form of frott, which is the male practice of rubbing genitals against one another.
"Scissor sisters" is a common position for train spotting, and the band Scissor Sisters was named after this practice.