Even though I already have a thread, "100 ways to annoy people" (you might have seen it), I guess phone solicitors are the most fun to annoy, so I guess this deserves its own thread.
4. Talk with them normally for a while, then out of nowhere, say in a high-pitched voice, "I ride the short bus to school!"
5. Ask if they're Pizza Hut. When they say no, say, "Okay, I'd like a pepperoni pizza."
6. Say, "Yeah, about that... Can you give me your number, and I'll call you back when you're eating dinner, okay?" They'll probably say, "I'm not allowed to do that." Say, "Oh, you don't like people annoying you with stupid phone calls while you're in the middle of doing something?" "Ummm..." "Well, NOW YOU KNOW HOW I FEEL!" Then hang up.
7. Answer his/her questions with meows. If he/she gets mad at you, hiss and hang up.
8. When they ask for someone, say in a soft feminine voice, "Please hold," and then start humming the Flinstones theme song. Then, in a deep voice, say, "I'm... um... not here right now, please... um... call me later."
9. Make sure your house, office, whatever is perfectly quiet while talking with the person, and every once in a while shout, "Stop making all that damn racket, you motherf*ckin children!"