fishwives' tale
story or talk that one cannot believe in; incredible story or talk.
Dude A: Once I met a tiger in a jungle. As soon as I raised my hand to hit him, he ran away.
Dude B: That's a fishwives' tale. Ha! Ha! Ha!
Dude B: That's a fishwives' tale. Ha! Ha! Ha!
fishwives' tale
an incredible story or talk.
Dude A: Once I met a tiger in a jungle. As soon as I stared at him, he ran away.
Dude B: That's a fishwives' tale.
Dude B: That's a fishwives' tale.