L.A. Lakers star Nick Young is finally stepping in to the war between his GF Iggy Azalea and Snoop -- calling the rapper a loser who's going through a "midlife crisis."
Snoop has been tormenting Iggy for days -- first making fun of the way she looks without makeup .... then comparing her to Marlon Wayans in "White Chicks."
Iggy fired back -- tweeting at Snoop that she didn't understand why he was being so mean to her. She also posted a pic comparing him to a "drugged out" old woman."
Snoop responded to that ... with a video in which he called Iggy a b*tch and a *c**t" -- and warned her "n**ger" to keep her in check.
Finally, Young decided enough was enough -- and joined the fight on Twitter ... writing, "Ain't nobody worried about no SnoopLion .. This dude Just goin thru a midlife Crisis."
He added, "You Go get convertible yet . OG's out here losin."
Young also posted another tweet seemingly directed at Snoop -- saying, " These old heads turnin into sucka's."
We're guessing this war is far from over.
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