In the sexual discussions of everyday life, the act of pretending to be having an orgasm usually focuses on women, even when it comes to making humor. However, women are not the only ones who "cheat", men can do the same. Studies show that 1 in 4 men has pretended at least once that they are experiencing orgasm. Why does this happen?
One reason for theater is that men may be hiding a sexual dysfunction, such as "premature ejaculation." Thus they hide the early orgasm and cheat on another the moment they see it as most appropriate.
Another reason is that maybe the partner is trying to please the partner until orgasm. Sometimes when they feel that their partner is nearing climax, especially if their partner is having difficulty passing an orgasm, that "false burst of energy" can help the partner.
On the other hand, if a man believes that the fact that he is not having an orgasm can hurt his partner's feelings, he can pretend.
Other reasons include loss of interest in having sex at that moment, dissatisfaction, or simply the fact that sex is lasting a bit too much.
Source: Psychology Today