Szczesny brands such players as 'traitors'.
He said: I've found I swear more at my opponents - especially before penalties. I did it with Emmanuel Adebayor last season. He scored but the fans were happy because of my behaviour.
"At the Emirates 'traitors' are not liked. I take after my father in those type of things.
"On the pitch, I'm like a son of a bitch but after the final whistle, I shake an opponent's hand and we congratulate each other."