The reason why a newcomer spewed during a teleconference

(1)During a teleconference, the newcomer suddenly held back his laughter
(2)You’re acting strange.
(3)Oh, no, nothing!
(4)It bothered me, but I inherited the story as it was
(5)Why did you laugh then
(6)When asked at work the next day, the newcomer said
(7)Mo, who crawls down from behind so that his wife doesn’t get caught in the camera
(8)I can see the wetness
(9)I had a cold backI am single