An ill grimace used to deter potentially harmful and unwanted train passengers from invading your personal space while commuting on the train.
Yeah...I'm already on my way, Chief. You should see this primo trim on the train right now! I'd step to her to say what's up, except I'm still half-hammered and didn't shower yet.

...plus she's got the TRAIN FACE in full effect. I'll just perv out on yo' moms when I swing through instead. Peace.
by BigErn May 8, 2008
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A person whose face looks like it has been hit by a train.
Guy 1- Bro, what do you think of that chick over there.
Guy 2- Her. She has a train face
by Lol master January 31, 2015
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A slutty girl that had a rat face and talks about explicit sexual stuff in trains in front of strangers.
Damn Muppet that rat face train slew didn't care that people heard her talking about getting banged in the ass.
by September 12, 2018
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