A group sex act, wherein all participants don WW2 era (leather/latex/etc.) fetish clothing and/or Steam Punk inspired sex toys. There is a Fight Club/Vegas rule barring all involved from speaking about any activities to anyone who was not present.
Bob: Hey, Jim, you look worn out. Rough weekend?
Jim: I'm fine. Just not feeling well.
Sue, whispering to Jim: That was a great Secret Nazi Treasure Train we did up Saturday night. I still can't feel my nipples.
Jim: Shhhh!

fetish leather secret Nazi treasure train
by listopencil August 29, 2015
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