Usain Bolt -- Schlitz-krieg!!! Olympic Star Hits Oktoberfest

Usain Bolt's got 'Hose in different area codes ... as in lederhosen ... 'cause the fastest man on the planet got all German'd out for Oktoberfest this weekend.

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.

Yay?