She posted on the boards asking how to do it. There's intent right there, in writing, all over the internet.
OP - I understand where you're coming from, I really do. The kid is a little punk and granted, he deserves to be taught a lesson. No one is condoning what he did or siding with him for being a thief.
But the point is that you are not the person to teach him a lesson and the realitiy is that by doing something (tempting as it may be) you could open up a whole bunch of trouble for yourself. Is some little punk and 20.00 worth of gas really worth all the potential headache and trouble you could end up finding yourself in?![]()
If you think they'd confiscate the OP's computer for adding water to a gas can that was on HER property, I'd have to say that you're setting yourself up for some major disappointments in life. Unless a death or major accident would result from such a thing, there will be no investigation really.
OP, if you decide to go thru with this (and you might just be enjoying the contemplation of revenge and it will go no further - understandable, LOL), use rainwater.