2.15 - Tall Tales

Sam, Dean, and Bobby encounter what appears to be a dancing alien, a chainsaw killer, alligators in the sewers, and other oddities straight out of the tabloids while probing strange occurrences on a college campus. They discover all are actually the work of one college janitor, a Trickster who has the ability to conjure into reality anything he wants. Not helping matters is the brothers' slowly escalating feud which Bobby suspects is also the work of the Trickster.

Source: IMdb