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Giants wide receiver Odell Beckham walked off the sideline and into the locker room before halftime, leaving the Giants’ offense on the field without him. That immediately raised eyebrows: Was Beckham again unhappy with the team and walking off in frustration?

Beckham said after the game that he was just dehydrated.

“I was cramping . . . so I was trying to go get an IV,’’ Beckham said. “Because the halftime break is really like five, 10 minutes [actually 12 minutes], so if I can use a couple extra seconds to go in there and get an IV and be able to come back out . . . that’s really all it was.’’

Beckham was also spotted on the sideline head-butting a cooling fan.

“I was just trying to get myself going,’’ Beckham said. “I felt like some of those plays after I was getting myself going was my best stuff. I was just trying to get myself fired up, and I did that and it helped me.’’

It was a game in which Beckham drew more attention for what he did on the sideline than for what he did on the field. Beckham gained just 44 yards on six catches.