Well you can't be as random as me, but you can try! And here's some pigish tips directly from me, Kate, the queen of all that is random.
1. Add animals or everyday objects to the middle of your sentences. This makes even the most normal sentence sound random. e.g. "MOTHER DEAREST! I BELIEVE MY PIGISH PEN HAS STOPPED WORKING! WILL YOU GO DOWN TO THE SPOONISH STORE AND FETCH ME ANOTHER?"
2. Use colours and textures in front of nouns when it feels right, or if it is a word that you use often, as this makes it more interesting for your listener. e.g. "OOH LOOK! IT'S A PURPLE FURRY PINEAPPLE! I LOVE THOSE GREEN SCALY THINGS!"
3. Talk about how you think one certain thing, looks like another certain thing. Don't worry about what other people think. If you think that pineapples and bananas look similar (which they don't by the way, this is just an example, I will kill anyone that suggests that an inferior fruit such as the banana even slightly resembles a pineapple), then they do. Alright? e.g. "DON'T YOU THINK THAT THIS HAIRBRUSH LOOKS EXACTLY LIKE A MUSHROOM?"
4. Talk about taking over things. This could be anything. A supermarket, a bag of brussels sprouts, your school or even the entire universe. This is not madness (see tip no. 5) no matter what people say. It becomes madness when you begin drawing up the plans for that giant spoon which you will use to dig a massive hole under those pesky zoo railings.
5. Usernames, chat room names, e-mail addresses? Stuck for ideas on how to make them funny and/or original? Random objects, kitchen utensils, your obsession (see tip no. 10), colours, textures, the name of your future husband/wife. One or more of these can be used at once to create this effect.
6. Madness. You may find lesser humans often refer to you as 'insane', 'mad', 'crazy' or sometimes even 'weird'. At this point it is easy to point out that you are not in fact mad but completely normal and it is they that are the mad ones. Obsessions (see tip no. 10)can sometimes be mistaken for (or even BECOME) madness so be careful.
7. Zone out often. Truly random people will do this anyway but if you're bored, or even if you just feel like it, stare at something and your mind will begin to wonder. It looks seriously odd. Generally someone will say "[INSERT NAME HERE] ARE YOU ALRIGHT?", your reply will be "OH SORRY I WAS JUST THINKING ABOUT [INSERT STRANGE DAYDREAM HERE]". Even if what you were thinking about was not weird use earlier tips to make it sound so.
8. Whenever you say something about your future husband/wife, mention the fact that they look like a cute troll/slug/or other hideous creature. Then count how many funny looks you get.
9. Tell people about your weird dreams, whether they want to hear them or not. You may also want to reminisce about the time you got your head stuck in the freezer and it was frozen for 3 whole days or something like that.
10. Have obsessions. And I mean obsessions. Ours are with pineapples as you may have noticed... You can change your obsession every few months or so if you wish. Obsessions can often be mistaken for madness (see tip no. 5)
11. PRACTISE MAKES PERFECT! I know it sounds clichéd but it's the truth. The only way you can improve your random ways is by trying to use the above tips in your everyday life.