Lamar Odom — Khloe Questions Set Off NBA Star

It”s now clear why Lamar Odom flipped out on a paparazzo in L.A. yesterday — he was pissed that the snapper repeatedly hammered him about a report he cheated on Khloe Kardashian.

The confrontation was all captured on video as the photog — not a our sources guy — rolled up to Lamar”s car and asked if he stepped out on Khloe with a stripper.

At first, Lamar calmly answered the question — saying, “I would never cheat on my wife, that”s why I wear my wedding ring.”

But things quickly turned — when Lamar asked the photog for his name and then said, “I”m gonna step out the car and I”m gonna talk to you.”

The video cuts … and when it turns back on, Lamar is in the middle of the street with the photog”s gear … and eventually puts it in his trunk.

The photog pleads for his stuff back — Lamar replies, “Shut up.”

Eventually, Lamar returned the gear.