Two men are running on treadmills side-by-side at a gym, and one of them has very pronounced female breasts. The man turns to his friend and says, seemingly because of his breasts, "Mauro, I'm not normal."
Ignoring the "elephant" in the room of the obvious breasts, Mauro replies, "What are you talking about? Aren't you always surprised by the extra charges on your cellphone bill?" He says, "Yes."
Mauro continues, "Well, that happens to everybody."
Encouraged, his friend asks, "Then I'm normal?" Mauro tells him he is.
Returning to his boob-bouncing jogging session, the man proclaims, throwing his hands in the air with victory, "I'm normal. I'm normal!"
A man then appears wearing a signboard (suggesting a circus) that reads, "Don't be normal."
The intended humor is the disconnect between the dialogue of the men and the obvious abnormality to viewers -- the man has women's breasts and is not trying to otherwise pass as a woman. While some transgender people will bristle at the suggestion of negativity that the man feels "not normal," others will appreciate that his friend sees nothing to comment on.