<prompt> Human: I know this is a little unusual for rpf, but 10,000 is a significant amount of money and paying this amount can be easily avoided, so it seemed appropriate, especially with New Years Eve just around the corner.I live frugally and save heavily, so when I learned that the average cost of a DUI is 10K it really woke me up. Thats twice the cost of my car!I realized that I just dont know what the legal limit in my state 0.08 BAC feels like, or how much alcohol it takes to get me there. I bought a well-reviewed breathalyzer on Amazon for about 120. This has two benefits: I now know what various BACs feel like, and more importantly, I have an objective yesno decision maker for whether Im good to drive.Im a big guy 63190lbs, so I was shocked to learn that 3 drinks puts me over the limit. I feel completely fine to drive at that level and have definitely driven at that level in the past. Im just glad I never got pulled because I would have been out 10 grand.I encourage anyone reading this who drinks to either be extremely conservative about driving after any alcohol or to get a breathalyzer so you can know for sure whether youre safe from a financial disaster.Obviously driving drunk has other dangers, but this is still rpf.  <response>: be extremely conservative about driving after any alcohol or to get a breathalyzer so you can know for sure whether youre safeI think you need to be very very careful here. This is, in my view, bad advice.Having a well-reviewed breathalyzer, and using that to determine if you are sober enough to drive is very dangerous, for a variety of reasons: Are you using the breathalyzer correctly? How long do you need to blow into it to get an accurate reading? Has the breathalyzer been calibrated recently? How accurate is it? Is this the breathalyzer used by police? If not, how does its readings compare to the reading you would get from a police breathalyzer?But more importantly, just because you blow .07 doesnt necesarrily mean you are sober enough to drive. Everyones physiology is different, so what may be safe for you might not be safe for someone else. 