When you fill a spoon with lube and stick it in your orifice in order to lubricateyour ass, then you continue to shovel the lube into your orifices.
Rupert: I wanted to try new things with Gertrude. What's the best way to lubricate my anus?
Mallory: The best thing is the slippery steam train, you'll be more slippery than ever before!
A short shimme followed by a gentle moan, performed by a female after a particularly intense lip engagement. Females will not perform a "steam train" at the beginning of their menstrual cycle
Where you tuck your penisinbetween your legs and die down on your stomach, masturbating from behind. It should look as though you are a train blowing steam.