FRISCO, Texas — DeMarcus Lawrence wants to make himself perfectly clear to Eli Manning, who has become his favorite social media punching bag.

It’s nothing personal. Just business.

Lawrence, the 27-year-old Cowboys defensive end who has amassed 25 sacks in the past two seasons, had been a thorn in the side of the Giants’ veteran quarterback, and he revels in it.

“I’m never out to disrespect [Manning] or his team,’’ Lawrence told The Post on Friday. “That’s not my character. But when you see something funny on Instagram, why not tease him a little bit, get our fans excited for the season? And we’re here now for the game, so there ain’t no more talking.’’

Except there was, because there always is.

When Lawrence, who has a self-described sweet tooth, had surgery in April to repair a torn labrum, he received a promotional get-well gift from Snickers and followed that up by throwing some shade at Manning with this tweet:

“Anyone know Eli’s address? I wanna send him some of these @SNICKERS#ThankfulForHisContributions’’

Lawrence’s surgery came right after he signed a $105 million contract with $65 million guaranteed, and he clearly wanted to share at least a little of his wealth with Manning, who he felt helped him make a few of those dollars.

In an interview during the offseason, Lawrence called it “a blessing to my career to be able to go against Eli twice a year,’’ clearly implying that means more sacks for him.

On Friday, after the Cowboys’ final practice in preparation for Sunday’s season opener against the Giants, Lawrence recalled the Snickers treat and subsequent Manning tweak and didn’t back away from it.

“I’ve got some Snickers here for him when he comes to town,” he said. “Make sure we treat him real nice and right. He’s welcome here any time.’’

Of his 34 career sacks, Lawrence has 3.5 of them against Manning, including one in each of the teams’ meetings last season.

When asked if he’s salivating at the thought of sacking Manning, who’s not known for his mobility, Lawrence said: “I salivate every time I get the chance to rush the passer. That’s my life. I don’t look at it as a game. I look at it as the Cowboys called Achilles from ‘Troy’ to come murder somebody, so I’m here. That’s my job. I just come out and cause havoc and play good team defense and rally to the ball and make as many sacks as I can, so that’s all I really care about.’’

The Giants’ revamped offensive line, of course, will have something to say about what kind of run into the Giants’ backfield Lawrence and the Dallas defense will have. The Cowboys sacked Manning six times in the teams’ first meeting last season.

The Giants believe it’ll be far different this time around with the additions of right tackle Mike Remmers and right guard Kevin Zeitler and center Jon Halapio healthy again.

“They’ve improved,’’ Cowboys defensive coordinator Rod Marinelli said. “I really like the O-line. That group, with those two veterans at right guard and right tackle, they do some good work.’’

Lawrence didn’t sound as impressed.

“It’s hard to sit here and focus on the changes they made,’’ Lawrence said. “We’re a defense and we play as one. What they have to understand is they have to bring a different intensity to match up with us. So, it’s not about what they do or the changes that they made, it’s all about what we do.’’

Lawrence indicated his familiarity with Manning has helped him have success against the Giants.

“Some teams have different tendencies that you can pick up on and are easier than others,’’ Lawrence said. “We play the Giants two times a year, so being able to play a stable quarterback that’s been in the league for a while, you start to see more things as you go back to the past, looking at old film.’’

Asked if, with Manning’s lack of mobility, it’s easier to sack him, Lawrence said: “It don’t make it easier, because say he’s not that mobile and now you think you’re going to be rushing to a spot all the time, but he loves to step up.

“He’s a good pocket passer, he’s a good pocket quarterback. He’s been doing this for a while. He understands his reads and he understands when he needs to get the ball out, so I don’t think it makes it easier at all, because it’s hard as hell to get sacks.’’