The first time i ever had acid- in fact, the first time I ever tripped - i had to have a sit-down dinner with my very anti-drug parents, while peaking.
Nightmarish? Uh, yeah. Very.
But the worst bit? The plate full of spaghetti in front of me kept subtly - but unmistakably - moving, slithering around on the plate.
Fortunately, even at my young age (16) i had a fairly robust mental capacity for mindblowing experiences - so the awkward and confusing meal aside - i had a great trip.