The husband cheats on his wife with his secretary, but notices that as a result of the big sex battle, a bite mark is left on his shoulder.
As he walks home, he wonders what to say to the woman.
He enters the apartment, their dog runs towards him.
Driven by a sudden idea, he starts wrestling with the animal, then shows his wife his shoulder:
“Look at what this . . . has done to me.”
Full article: https://www.bikuci.hu/vicc-a-ferj-megcsalja-a-feleseget-a-titkarnojevel-de/