William Shatner had 'frightening' visions of monsters coming out of walls in wild magic mushrooms trip

William Shatner opened up about his shrooms experience - and let's just say he didn't have a very good trip.

The 92-year-old Star Trek legend has been open about his previous drug use, and while he doesn't dabble anymore, cannabis used to be his substance of choice.

But when it comes to psychedelics, he's stayed well away ever since taking magic mushrooms for the first time.

When you hear what he went through, you'll understand why.

Shatner made the revelation in his 2018 memoir Live Long and...: What I learned Along the Way, in which he discusses the 'meaning of life, finding value in work, and living well whatever your age'.

On the topic of getting high, he wrote: "I used to smoke pot or grass or whatever it is currently called.

"A friend of mine had a party every Saturday night and there was always pot there. I would go to those parties and get stoned."

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As for the harder stuff, he did try cocaine around 'a dozen times' but it didn't agree with him as it would make him 'really depressed'.

But this was nothing compared to his shrooms experience, which came about when Shatner and his wife Liz were in Amsterdam.

The couple were offered the psychedelic substance at one of the city's coffeeshops and they thought why not? What's the worst that could happen?

The James T Kirk star explained: "Somewhere in the recesses of my mind I remember reading that Alice in Wonderland was actually the description of a psychedelic trip.

"Well, I always loved Alice in Wonderland, and if it were possible to visit Wonderland that appealed to me."

Little did he realise the horrors that were to come.

The pair travelled back to their hotel room to take the magic mushrooms, but while Liz had a 'beautiful' trip, William's was anything but.

"My experience started with grotesque figures coming out of the walls," he wrote. "They were, in every way except reality, real to me."

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The actor went on to say that the 'creatures' started 'oozing' out of the hotel walls, while his own arms appeared to extend out of his body.

"I had never experienced anything like it," he added. "I was frightened by these apparitions, but I was also mystified and fascinated."

But he wasn't fascinated enough to be willing to take it again, saying the trip brought his 'greatest fear' of dying to the forefront of his mind.

"I haven’t touched a psychedelic since that day," he declared. You can't blame him.