Definition
An expression used to convey strong disbelief or refusal, indicating that the speaker does not believe what someone has said or will not allow someone to do what they intend.
"I don't need your help, I can definitely handle this myself!" "The hell you can!"
"I will not make the same mistake again." "The hell you won't! You say that every time."
"I don't care about her at all." "The hell you don't! I don't believe you."