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To prepare to drive while high on marijuana.

To smoke marijauna before you drive.

To feel like you are in the video game/movie TRON, written by Steven Lisberger, while you are driving.
"Hey bro, I'm taking off." - Guy 1
"Catch you later dude, Tron-up!" - Guy2

I'm about to Tron-up before the roadtrip begins.

I Troned-up so hard before I drove home last night.
by LuckyCassy October 26, 2010
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