I couldn't stop laughing because a related slip of the tongue was funny when I was practicing with my colleagues. What should I do? I usually laugh when I think about it, for fear that my lectures wil

I couldn't stop laughing because a related slip of the tongue was funny when I was practicing with my colleagues. What should I do? I usually laugh when I think about it, for fear that my lectures will be seriously affected in the future. Some things will make people laugh, but many people will consider each other's feelings and refrain from laughing. Your colleague played a joke because of a slip of the tongue. He should be embarrassed. You have to think from his point of view: what kind of feeling will this sarcastic and unkind smile bring to you? You may not laugh after comparing yourself, don't you think?