Iggy Azalea -- I 'Smashed' My Face Dunking ... (Video Shows Otherwise)

Iggy Azalea has no tolerance for pain ... 'cause she claims she "smashed" herself in the face while dunking a basketball ... despite strong video evidence to the contrary.

Iggy was hoopin' around with her BF Nick Young on Friday when she decided to test out her dunk skills.

She went up. She threw down. Ball sorta love-tapped her in the face.

So, of course, she immediately went to Twitter and injected faux drama ...

"Somehow while trying to dunk a damn ball i smashed myself in the face. i won't quit my day job anytime soon. lol."