Is 5 beers (roughly) what it takes for the average person to blow .08% ?
I can not only drive fine after 4-5 beers, I can play volleyball, badminton, Frisbee, ect. and do it all pretty well. After 7-8 I might start loosing to the average sober person.
Seriously though, after 4-5 beers I either get full or get a headache.