Iggy Azalea -- Screw The Sex Tape ... Simulated Sex with JLo WAAAAAY Better

Iggy Azalea is one big-ass contradiction ... she's running from a sex tape her former BF made, but she just dropped one of the hottest, most sexual videos EVER with Jennifer Lopez.

Just watch and behold the video -- "Booty." Whatever your sexual orientation, you will be turned on. Seriously.

Iggy and JLo grind crotches and slap each other's asses ... with commitment.

It's also very wet ... after they oil up. BTW ... there's also music, but seriously, who cares?