1 definition by Kendall Stalker 69 69

when one male fucks a female in the anus, and then another male inserts his scrotum into said female as the first males ejaculatory juices seep from the females anus and proceeds to fuck said females anusuntil he himself blows his wad in that hos ass, so to speak.
me and my bro elliot prformed the act of running train on that fine ass cookie kendall last night she blew her whistle real good
by Kendall Stalker 69 69 April 13, 2008
Get the running train mug.