"don't pull as sammons" is a common saying nowadays. It's like saying don't be a dumbass, except in a nice way. Usually when someone does something n00bish and no words can express the stupidity you have just witnessed, simply say "don't pull a sammons"
A serious example is when someone puts a marshmallow in to the microwave and heats it for two minutes and sits there watching amazed yelling "Dude, the mellow got pwned!"
When you drop by seeing your microwave dripping with ooze on the sides like the gremlins in the movie "gremlins", then here is the best time to say "don't pull a sammons"