It's disgusting to urinate in places that aren't the toilet.
Jack is attending a party at a friend's house when the urge to pee hits him.
Jack wants to relieve himself.
Jack holds his pee while he waits in line for the restroom.
Jack goes outside and pees behind the deck, since the restroom was occupied.
Other guests are unaware of Jack peeing and are unaffected.
Other guests on the deck can hear Jack peeing and feel nauseated.