When staring at your gas needle and noticing that it is very low, you determine that it is time to do something about it. Either getting an actual red 5 gallon gas can, or popping the lock with the key, making sure your lights are off, and pulling in for a quick fuel up on the dude watch.

(see dude watch)
Dick: Man my needle is on empty! What should I do?
Jane: You need to pull a red can run!
Dick: That's right! I'll grab the can!
Jane: Or you can just pop the lock and do the dude watch!
by JohnnyPots June 22, 2007
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