Is it normal to keep imagining embarassing things in the mid. of social events

Is it normal that i keep on imagining embarassing or bad things happening to people in the middle of social gatherings , stuff like the hostess of the social event will take her clothes off or her pants will slide of her legs and she'll be in her underwear , or when greeting people instead of kissing them on the cheek (since in our country we usually kiss people on the cheek as a greeting ) people would kiss each other on the mouth , or when everyone is quite someone will fart and it will be loud and smelly or in the funeral someone will start laughing hyseterically. is it normal ?