Take the kid with you. Yes, that’s right — take a five year old girl with you into the men’s room. Have her keep her eyes closed if you must.
And if it was your wife with your son. Would you suggest she take your son into the women’s room? And up until what age. 5? 10? And what if he was older than your cut-off age. And how do you think the women inside would react to your son’s presence there.