A man walks into a bar and hears a voice that says, "Nice shirt." A bit later he hears, "I like your haircut." He doesn't see anyone and he asks the bartender who is talking.
The bartender replies, "It's the peanuts. They're complimentary."
A guy is sitting at home when he hears a knock at the door. He opens the door and sees a snail on the porch. He picks up the snail and throws it as far as he can.
Three years later, there's a knock on the door. He opens it and sees the same snail. The snail says, "What the heck was that all about?"