A sex position where two females in the doggy-style position are in front of the male, facing away at oppsosite 45 degree angles. The male grabs a pony tail in each hand and intercourse commences. The females stay in the same place. The term "rambo" is coined because rambo holds one gun in each hand.
"Dude, convinced those two girls from class to do the Rambo Train with me, shit was so cash."