Nelly, 45, and Daniella received a score of 16 out of 30 possible points from the judges in the premiere and an additional 18 out of 30 points for their second dance this week.
"They're whack, whack, whack. They're hating," Nelly told Us Weekly on Tuesday afterDancing with the Starsaired its second episode of Season 29.
"I feel like the judgment should come with understanding! You're judging me. I'm from the hood in St. Louis, Missouri. There are no ballrooms. I've never danced, choreographed in my life and you're judging me like I should know these things and I just picked up this choreography in five days."
Carrie Ann, Derek and Bruno advised Nelly to work on his flexibility, spotting in turns, posture, dropping his shoulders and more in the past two weeks of competition.
"I don't think that I'm being judged on somebody who's never choreographed," Nelly added.
"I'm being judged, like, 'Straighten your back up,' get this, did that. I'm like, 'My man, I was on time.' That should count!"
Derek even suggested in the premiere episode that Nelly should ditch his sneakers and buy himself some appropriate ballroom dance shoes.
The rapper therefore considered a new look and had some custom dance shoes made for him for Tuesday night's episode that resembled a pair of sneakers.
"The judges kind of made it a point last week to point that out -- which I thought [Derek] was there to point out my dancing as opposed to my getup, but okay," Nelly vented to Us.
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"The cha cha that we did, it required a little bit more sliding across the floor, which, you know, gym shoes are the exact opposite. They're made not to slide. So, I had to find a good medium and we came up with something that was really, really dope."
What apparently bothers Nelly the most about the judges' criticism is how it reflects poorly on his dance teacher, Daniella, whom Nelly believes is doing an excellent job.
"As far as my technique, that's in this young lady's lap, and when those judges don't see that, I get offended because I'm taking up for her," Nelly said.
"I don't care about me, but she's put in the work and they shouldn't be doing that to her."
As for Johnny, he received a score of 18 out of 30 possible points two weeks in a row.
Johnny told Us that he believes Carrie Ann, Derek and Bruno are "being harsh" on him and holding him to a higher standard because he moves so well on the ice.
"They hold me to a different level than most of the competition. I mean, I shared a 6 from one of the judges of Carole Baskin," Johnny, 36, explained on Tuesday.
And his partner Britt apparently agrees after Johnny was told to work on his frame and be more smooth on the dance floor.
"I do think that he is being held to a high standard and [they're] having high expectations, but we absolutely take the judges' critiques and we apply them always because they are absolutely valid," Britt said.
Johnny and Britt's scores landed them in the middle of the judges' leaderboard both weeks.
"I'll tell you that I don't like 6s, and I especially don't like 6s when they tie me with people two weeks in a row," Johnny admitted.
"I'm a perfectionist and want 10s every week. That was the goal coming in here. Even if I didn't get them, I worked really hard to be at the level to possibly get a 10."
"But if there's anybody in this cast that has been judged face to face it's me," he added, "and I've dealt with it for years."