When a group of 5 or more dudes walk into a party at the same time, causing everyone already in the party to be like wtf
That party was off the hook until like 3 dude trains came in and made it a sausage fest, ruining it completely.

Wtf another dude train, lets get the hell out of here.
by thorogood jenkins February 24, 2009
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The guys a girl thinks are her friends and she likes to hang out with but who are secretly waiting for their chance to move in and get beyond the friend zone or try to make the relationship more physical while pretending to only want to be friends.
Sarah always texts her dude train while we are out and it gets really uncomfortable having these guys hovering around her while I am trying to date her.
by rgv103 April 7, 2011
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