Shrooms (2006)

[Bojangles]

Follows a group of American teens that come to Ireland to visit an old school friend, who takes them on a camping trip in search of the local fabled magic mushrooms. When the hallucinations start taking hold, the panicked friends are attacked by ghostly creatures; never able to determine if they are experiencing gruesome reality or startling delirium. When one teenager unknowingly eats the dangerous "Death's Head" mushroom, the group's nightmare takes a deeply sinister turn. Official Trailer.

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[shondaandjensen]

very weird movie. only could watch it once though.

[Bojangles]

Yeah, I've watched it a couple times. It was alright.