|This needs a stretch.|
Ryan and Deb Trainor were witnesses to the appearance of an alien while they were on a camping trip.
Insert details here.
They seemed very credible, and they were in fact telling the truth about what they thought they saw.
Scooby-Doo! (DC Comics)
They thought they saw an alien outside their tent and they snapped a shadowy picture of it. It was actually an inflated dummy manipulated by their friend Warren Wallace, who was building up a hoax to help the circulation of his uncle's tabloid newspaper.