forget that noise

used to express anger and the fact that someone does not care about someone or something

The origin of the idiom "forget that noise" is not precisely documented, but it is used to dismiss, reject, or express disapproval of a suggestion, idea, or statement, often with a sense of annoyance or irritation.

When he suggested going on a camping trip in the middle of winter, she responded, "Forget that noise; it's too cold."
After listening to his long-winded explanation, she finally said, "Forget that noise; you're not making any sense."
When he proposed a complicated solution to a simple problem, his colleagues told him to "forget that noise" and find a simpler approach.
When her friend suggested a diet of only raw vegetables, she exclaimed, "Forget that noise; I love my pizza too much."
Hearing his proposal to invest all their savings in a risky business venture, she immediately said, "Forget that noise; we need a safer plan."