Hellofa move from New York Giants WR Victor Cruz this weekend ... when he stopped his pal outside of a NYC nightclub and gave him an impromptu DUI test to make sure he wasn't going to drive drunk.
Cruz and his pals were leaving Club Opus around 3:45 AM on Sunday -- when Victor tells his friend to "walk 3 steps" to prove he was sober.
Unclear if Cruz felt his friend passed the test -- but he definitely let the rest of the group know they should keep an eye out for their buddy.
The group eventually left -- and it didn't appear as if the friend was going to drive ... so props to everyone involved.
BTW -- Victor's NY Giants took on the NY Jets hours later at 1 PM ... but Victor is injured and didn't play -- so don't freak out too much over the fact he was out partying.
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