To Rid Oneself of a Guest Who Has Over-stayed Their Welcome

Here's one of my favorites. It often works, and FAST!

When your guest is looking away or has gone to use 'the facilities', quickly re-arrange their place setting turning their cup, spoon, place mat, whatever, once counter-clockwise saying to yourself:

"Basta! Ora vai via."
"That's enough, you go now!"

When your guest returns to their seat, they'll appear a little distracted, then suddenly they will excuse themselves because they have to leave.

Don't forget to wave buh-bye...  :)