A classmate forgot half of the joke, how to skillfully ease the embarrassment?

Laughter is a good way to relieve. When the students were chatting and telling jokes together, they suddenly forgot. Someone suddenly farted or said something wrong, and the atmosphere suddenly froze. This time, it's embarrassing. You might as well try to smile. Your laughter will drive the laughter nerves of other colleagues. Everyone laughs together, and they won't feel embarrassed.