Is that supposed to be the picture of the guy, because he sure as hell doesn't look 18 to me. They had that thing on Myth Busters about ways to beat the breathalyzer, I don't think eating your pants was on it though.
Gotta at least give him points for creativity. I certainly wouldn't have thought of that! Of course, even if I did, I don't think I'd have actually tried it.
I know someone who drank a bottle of cologne when pulled over for drunk driving. It was an attempt to mask the alcohol smell on his breath. Amazingly, the strong stench of cologne ticked off the officer so much that he sent him on his way!
The last laugh may be on the constibulatory. I saw this story a few weeks back or so and as it was told, the guy appeared way over the limit by observation but upon formal testing was right on the line. The idea was that the fabric absorbed alcohol in his stomach that was undigested and with the influx of alcohol stopped, his body burned enough of it off to get him to the limit at test-time. This story makes it sound like he never got it down. either way three things come to mind. 1) Its funny as hell 2) he will never live it down 3) that dude is a frickin DORK if thats his pic - certainly looks like an underoo eater to me!