Didn't your mother teach you any manners?

The answer appears to be "no," and although there's no explicit mention of it in this article, I have a feeling somehow that alcohol may have been involved here:

A sheriff's deputy and his mother face charges of disorderly conduct after the deputy vomited on people at a Kenny Chesney concert in Fargo and refused to leave, authorities say. Police Sgt. Mark Lykken said Stark County Deputy Justin Krohmer, 26, and his mother, Susan, 47, whose husband is the Ada, Minn., police chief, were arrested after the Saturday night incident.

Lykken said Justin Krohmer was asked to leave the Fargodome about 11 p.m. Saturday after vomiting on people in front of him, but he refused to do so.

Susan Krohmer is accused of pulling and pushing officers, screaming profanities and of trying to prevent an officer from escorting her son out of the concert.

Perhaps I'm mistaken about the booze. Maybe the cop just had a nasty stomach bug and his mom just has a severe case of Tourette's syndrome. Yeah.