How to hallucinate?

We already know.

Some use a chemical assistant, some make up sh!t like alien abductions, the chupacabra, and salmon slapping bait fish with their tails and then have visions of it really happening.

Whatever suits you.
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She was standin' alone over by the juke box, like she'd something to sell.
I said "baby, what's the goin' price?" She told me to go to hell.

Bon Scott - Shot Down in Flames