Shaq got a head start on his retirement -- the 7'1" NBA legend wedged himself into a tiny go-kart in Tennessee recently ... and sped around a BADASS race track with his girlfriend Hoopz.
It's just like that episode of "The Simpsons" where Nelson laughs at the tall guy in the tiny car -- not that we think Shaq looks ridiculous or anything ...
Shaq -- Go-Karting Into Retirement
6/6/2011 4:00 AM PDT BY TMZ STAFF
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