1 definition by M. Lester
Usually consists of 2 girls and three guys; one gay, one bi, and one straight. The gay guy is the conducter while the first girl is wearing a strap-on doing him. Then the second guy is giving it to the first girl while the second girl is wearing a strap-on doing him. Finally the straight guy is railing the Second chick to complete the train. ALL ANAL!
by M. Lester May 8, 2007