Interesting topic. I've had 6-7 at a tailgate, gone to a game, and then felt fine to drive afterwards, but that's more like a 4-5 hour gap in between. There's also been a few morning-afters where it's been dicey, but at no point have I woken up and said to myself "Man...I should not have driven last night".
I'm generally pretty cautious about these things, especially after a friend in high school got into a pretty bad drunk driving wreck. I also had the awesome job of getting drunk for TN state troopers so that they could practice their field sobriety testing, so I got a good understanding of just how little you have to drink to get nailed for a DWI. I'm extra careful after that one, although I did pick up a few tricks about how they do the field tests before the breathalyzer.
ChampKind, that's hilarious... There are many people who are unemployed that would love that job...haha... How much did they pay you?
It was a volunteer basis, but about once a week they'd lock you in a room, pour you shots and mixed drinks (good stuff, too, ketel one, sailor jerry, SoCo, etc) until you were at about .12 or lower. It was mostly other people who were affiliated with the university but weren't students at that point. They'd monitor how much we drank and give us food, and then about an hour later we'd get tested by about 4 different groups of cops in training.
It was surprising how people who only blew a .04 or so would get cited for driving while impaired. That was probably the biggest lesson that I learned - that the police can still haul you in even if you pass the breathalyzer. They also had this awesome story about beating a DUI, which I will share for you now. It may or may not be true, but it was relayed to me by a TN state trooper, and I'm not sure why he would lie about this. Also, he was a black motorcycle cop, and his call sign was Chocolate Chip. I thought that was funny.
Essentially, a man gets pulled over for having a taillight out late at night in middle Tennessee. Immediately, before the officer can get out of his cruiser, he jumps out of his car, holding a full bottle. He whips his keys into a nearby field, stands directly in front of the police car, cracks the seal on the bottle (a fifth of whiskey), and finishes it in front of the officer (and his dash camera), who at this point is screaming at the man to get in his car.
Well, the man ends up getting arrested, charged with possession of an open container in public, public drunkenness, resisting arrest, and suspicion of DUI. While he eventually ended up getting convicted on the first 3 accounts, the DA didn't have any solid evidence that the man was impaired while he had been driving, so they had to drop that charge.
The end result - 3 other convictions, a night in jail, towing costs for his car, several fines, and a likely a ridiculous hangover - but no DUI. Clearly it's a tradeoff, and probably a huge risk, but apparently there's one last ditch resort if you find yourself absolutely screwed. Like I said, it may not be true, but the source I got it from is semi-reliable. That said, I probably wouldn't try it myself.