NY Giants Star Victor Cruz -- I Still Know What It Takes to Win ... At Least In Pop Warner

New York Giants wide receiver Victor Cruz fired up a bunch of Pop Warner kids the other day -- leading the team in a badass end-of-practice chant ... and TMZ has the video.

Cruz was driving through Hasbrouck Heights, New Jersey on Tuesday night ... when he saw the local Pop Warner teams (kids 8-12-years-old) practicing and decided to stop by.

The coaches rounded up the kids and let Victor lead the players in the traditional Hasbrouck Heights "break" -- and you can tell from the video, the kids are PUMPED.

We spoke to some of the parents, who told us they weren't expecting Victor to show up -- and when he arrived he couldn't have been nicer ... smiling for pictures and signing autographs.