Similar to douche or douchebag. A douchetrain thinks much more highly of himself than the general population. He also engages in the practice of douchebaggery.
A douchetrain commonly ends sentences with phrases like "bro" and "kiddo."
Douchetrains don't go out for a few beers. They go out for vodka tonics and vodka redbulls.
"I think some of the 'product' from that douchetrain's hair dripped on me when I walked by."
DoucheTron 5000 is the robot version of Trump. It is programmed to only lie and fraudulently cheat and alienate all who have the misfortune to cross its path. It automatically grabs any woman's pussy within reach. DoucheTron 5000 also takes massive dumps like its "human" counterpart. Its main weakness is its fragile ego software.
DoucheTron 5000 had a meltdowntoday when confronted with irrefutable facts and logic.
When the word douche is not suitable anymore and said person has reached a level of douchebagness that is off the charts by distributing large amounts of they're douchebaggery