Kenny Smith -- Shaq's Limpin' Around ... After Titanic Tumble

Shaq might be on the 15-day DL after taking a (hilarious) spill on the set of "Inside the NBA" last night ... that's according to co-host Kenny Smith who says the big man's big fall has left him a little gimpy.

Kenny was at LAX this morning when we HAD to ask him about everything regarding the tumble heard 'round the galaxy ... most notably how the Diesel is moving following the gravitational smackdown.

Bad news for Shaq ... seems he was a little banged up after all.

Get well Diesel.