urban legend

US /ˌɝː.bən ˈledʒ.ənd/
UK /ˌɝː.bən ˈledʒ.ənd/
"urban legend" picture
1.

lenda urbana, mito urbano

a humorous or horrific story or piece of information circulated as though true, especially one that is widely disseminated orally.

:
The story about alligators in the sewers is a classic urban legend.
A história sobre jacarés nos esgotos é uma clássica lenda urbana.
Many people still believe that urban legend about the vanishing hitchhiker.
Muitas pessoas ainda acreditam nessa lenda urbana sobre o caroneiro que desaparece.