The Moe Szyslak special is when you are eating with someone you do not like and then from out of nowhere you give them the old fork in the eye.

executing someone with a single shot through the eye. Taken from the movie The Godfather where the character Moe Greene(who was based Bugsy Siegel) was shot while laying on a massage table

Getting killed with a shot in the eye, like the character, Moe Green, in The Godfather. One form of "sending a message."

Having sex with a girl before kissing her