Tema: La ameba que devora el cerebro

Pero vamos a ver, como quereis que remonte el flujo de la orina??? eso es físicamente del todo imposible.

La próxima vez que vayas a mear te paras a pensarlo y verás, la fuerza de la gravedad, la irregularidad del chorro... vamos, ni de coña.

En la wikipedia:

A well-circulated myth is that the candirú is capable of swimming up the stream of urine in mid-air to a victim standing on shore or a boat. This is physically impossible as the maximum swimming velocity of the fish is opposed by the downward velocity of the urine stream, and the further impossible act of the 5-14 mm wide fish maintaining position and thrust within a 2–7 mm wide column of fluid. They are also probably not attracted to urine as commonly thought.

La única posibilidad que tiene de entrar es que estés debajo del agua, igual que la ameba.