That girl in the bar was pretty hot until she smiled...she had sushi caught in her train tracks...

Oh, really....braces?

Yep
by B. Hanback December 31, 2009
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Used to describe someone with a under bite with braces.

Synonyms - Train, Rails, Subway, Train Track Deng.
The Milky Way Express goes across the Train Tracks.
by Juan-Athan June 22, 2017
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People with braces that has theirs lined up it looks like a train could run on it. Legend says you can hear 'Thomas the Tank Engine' theme song if you go near them. But it'll be hard to get close to them as they are very insecure.
by Anonymous138795 July 3, 2018
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The series of marks upon one's arm due to injection of heroin. When the marks run up and down someones arm, similar to the tracks of a train, they are said to have train tracks.
Watch out for Paul man, he's totally addicted. Train tracks all over his arm.
by mapaccio March 29, 2009
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When you rub your dick between the vagina lips, without ever sticking it in the actual vagina.
Wow, so Kevin's girlfriend Chelsea won't have sex with him? That's fucking gay.

Yeah, but at least he is train tracking her.
by Apt. 42 November 28, 2009
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