On a conference call with reporters Wednesday, Porter said he had no idea how the Jaguars receiver could still be playing despite having a felony cocaine charge against him earlier this year.
Porter, who called Marshall "soft" and a pouter after Miami's win in Denver last weekend, made his comments after being asked about the NFL's crackdown on big hits that are deemed illegal and dangerous. Early in the season, commissioner Roger Goodell sent a warning letter to teams telling them, among other things, that first-time offenders would be subject to fines.
"If I knew the answers, I'd still have 20 more thousand dollars," said Porter, who was fined $20,000 last month for criticizing referee Ed Hochuli after a loss to Houston. "But I'm still trying to figure out how a guy gets caught with cocaine in his car and still plays the game and nothing happens.
"He got caught with cocaine and Matt Jones is still playing football. How does he get away with that? And then you fine people $20,000 for making comments to the media about the refs. The guy got caught with cocaine."
In July, Jones was charged with cocaine possession when a police officer in Fayetteville, Ark., saw him inside a parked car allegedly cutting up cocaine with a credit card.
Last month, Jones agreed to enter into a drug treatment program that could erase the felony charge against him.
The NFL suspended Jones for three games, but he appealed the suspension and is awaiting a final decision.
Asked on Wednesday -- before Porter made his comments -- if he would like to get the looming suspension over with, Jones said: "You definitely want to, but it's not my choice. I'm going to play as long as I can and whenever, whatever, you go through it."
Porter, meanwhile, also responded to the comments Marshall made about him Monday in response to Porter's initial comments the day before. Marshall called Porter soft and said he had "popcorn muscles."
Porter said he didn't know what "popcorn muscles" are.
"Nope. I know Orville Redenbacher. I know popcorn," he said. "But I'm not worried about that. That game is over. I'm looking at Seattle. For him to still be on that, I did get in his head, obviously. He's wasting time. They have a game tomorrow. I'm worried about me. I left Denver three days ago."
Denver plays at Cleveland on Thursday, while the Dolphins play the Seahawks on Sunday. Miami doesn't play Jacksonville this season.