Meaning of the word "if my aunt had been a man, she'd have been my uncle" in English

What does "if my aunt had been a man, she'd have been my uncle" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

if my aunt had been a man, she'd have been my uncle

US /ɪf maɪ ænt hæd bɪn ə mæn, ʃid hæv bɪn maɪ ˈʌŋ.kəl/
UK /ɪf maɪ ɑːnt hæd biːn ə mæn, ʃiːd hæv biːn maɪ ˈʌŋ.kəl/
"if my aunt had been a man, she'd have been my uncle" picture

Idiom

used to dismiss pointless speculation or hypothetical scenarios that are impossible or irrelevant

Example:
He says we would have won if the weather was better, but if my aunt had been a man, she'd have been my uncle.
Stop worrying about 'what ifs'; if my aunt had been a man, she'd have been my uncle.