What does the old joke of lovers' net names correspond to?

Zhang San felt that he was not his own since he was a child.

Once he was playing outside and accidentally fell into a cesspit. Her mother saw it and said, "Let's not have this baby!" " ! Go back and eat another one. "

When she grew up, she had a high fever. Her mother touched his forehead with her hand and immediately retracted her hand and said, "It's so hot!" "

His father immediately opened his mouth and said, "Look at your mother!" "

Is this a kiss?