Whyte is trying to become the mandatory challenger for Wilder’s WBC heavyweight belt.
But first the American has to defend his title against Dominic Breazeale on May 18.
In the build-up to that fight, Wilder claimed he would has “no remorse, no sorrow and no sympathy” if his opponent did not wake up from a knockout blow.
And Whyte has slammed his fellow heavyweight for the disgusting comments by claiming he must have been on drugs.
“It’s an easy fight. Deontay Wilder will bash Dominic Breazeale up. Breazeale’s scared of Wilder,” Whyte told IFL TV.
“I watched the press conference, the face of Breazeale, he was shaking in his boots.
“Wilder again saying, ‘I can hear your heartbeat. I’m a killer, you’ve never been in front of a killer before’.
“What are you talking about? This is boxing, you’re not a killer. You’re not some hitman. It’s boxing. The guy is stupid.
“Wilder is a crackhead. Crackheads say crackhead-like things and do crackhead-like things.
“They’re desperate, they do desperate stuff, say desperate stuff and that’s why Wilder is a crackhead. He’s scared.
“He needs to say these things to himself to get his confidence up, he’s basically talking to himself.”
Whyte also thinks Wilder is saying such controversial statements because he is worried.
“When someone’s scared and nervous, they say erratic things and say things they don’t mean,” he added.
“He puts on this massive ‘Bronze Bomber’ persona and he shouts and he’s loud, it’s just to give himself self-esteem.
“He’s scared and he doesn’t know what to say, just like crackheads do.”