Even long-time servers are upset when entitled people throw a fit. It's always unpleasant, and it never gets any easier to be screamed at by someone. Even for this server, who's been in the industry for six years, a Karen managed to spoil their mood. As u/ravioliwizard shared in their post to r/TalesFromYourServer , “It all started when a woman asked for a side of butter…” The Karen immediately began to fret over her butter, even though the server had barely left her table. Then, the OP says th…