Irish Tact

Ability to tell someone to F*** off while making them happy to be on their way.

Solicitor: * rings door bell* "Can I sell you...<interrupted>"
You: *Squirts him in face with steak sauce* "Piss off quickly before the wolves smell you. They hunt at night." *howling in distance*
Solicitor: Gladly runs to car and drives off.

Your friend: Wow, that's some Irish Tact in action. He wasn't even mad at you.