A perv that knows no boundaries. He always knows how to joke around and can be the life of a party. Plexter is a great friend and always knows how to cheer people up even in the worst of times.
Plinxters = lol. Thats all there is to it. It was invented because Monica decided she was bored with the word "lol" because you don't actually laugh out loud. So she made up a new word. Plinxters.