There's an old saying: if a deal sounds too good to be true, it probably is. Look out for any of these impossible dreams; they might turn into all-too-possible nightmares:

A real-estate agent arrives on your doorstep with a "once-in-a-lifetime investment."
Nice try! This two-bit huckster wants you to spend your retirement fund on 6 acres of stink-swamp so he can move into your much nicer current house and pet your dog all day.

An old man with a beard says you are the newest applicant to a "prestigious wizard academy."
Steer clear! This old nut clearly wants money—or worse: for you to spend your precious time conversing with a lonely elderly person.

A beautiful, compassionate soul tells you they want to spend "the rest of our lives together."
Don't do it! If this person could see the secret darkness that you know is gestating inside you, they would turn to ashes at your touch. Say something hateful in return, in order to set them free.