Michael Bublé was seemingly feeling too good during NHL All-Star Weekend festivities on Thursday ... and he's chalking it all up to taking way more mushrooms than he signed up for.
The 48-year-old Canadian musician -- who's a celebrity captain for the All-Star Game -- spoke with the media following the Player Draft at Scotiabank Arena ... and as he fielded questions, he abruptly claimed he was spaced out on psychedelics.
"My buddy told me, this is just a microdose of mushrooms and he was LYING," Bublé said ... adding the drugs made him feel like he was in a Will Ferrell movie.