What does it mean that men are on call?

It shows that you have a certain affection for this woman. In a man's heart, if he has a certain affection for a woman, then in a man's heart, he will be particularly friendly to her. As long as a woman has something to do, then a man will be on call.

In fact, in a man's mind, helping the person he likes is also a particularly happy thing, so as long as a woman has something to do, no matter how busy a man is, he will not hesitate to help her, never complain, and never refuse a woman.

When a man says that he is on call, it also means that he regards a woman as his lover, so if she has anything, he will be willing to help her.