Bolt trekked over to Munich -- where he got into the Oktoberfest spirit by pounding beer after beer after beer ... at world class speeds.
Bolt LOVES the festival -- he went last year too.
The most shocking part of the whole thing -- beer consumption at Oktoberfest is reportedly WAAAYYY DOWN this year ... by roughly 1 MILLION LITERS!!
However, alcohol poisoning at the event is also way down ... so, there's that.