I've had plenty of mate beggar situations. Most of the time, they'll come up and sit beside me, like a lot of others tend to do. They just kind of randomly follow me around, trying to get me to notice them. If that doesn't work, they'll just say "hi" and make me feel sympathy for them by saying things like "i'm so lonely...no one likes me...I need a mate..." or something along those lines. Then they'll go on and ask me to be their mate, and even when they said no, they still persist. By then I just ignore them until they get the message. xD