There was once a very young rattlesnake who lived in a desert. He liked it, but it never rained there, so there was little water. He became thirsty. The only water source was a cactus. The snake knew the only way to get the water was to use scissors to open the cactus. The snake saw an old scorpion whose pincers could do the job. The snake assumed the scorpion was friendly, so he asked the scorpion politely, "Will you kindly open up the cactus so I can get the water?" "I can, but not for an overgrown worm!" Replied the scorpion. Then he started to fight the snake. Wounded, the snake gave up, feeling thirsty and hurt. 
Don't talk to strangers. 