hey moonbeam,
i can try to explain it you and hopefully it will make sense. the hard part is not only the explanation but trying to convey that this is not a situation where someone can say "i know what that's like" (unless the person is completely insane!). as long as you keep that in mind, then it's much easier to explain!

the overall idea is that all your senses are extremely heightened and that everyone has different experiences because the drug stimulates thinking about those senses (which is why people sometimes have "bad" trips). in a bad trip, your sense are just as heightened except about negative or scary things. basically, if you can't have a bad trip without the drug, you can't really have a good trip without it either (which is why you can't really simulate shrooms in your mind, on your own.)
sorry for the length but here goes:
-imagine biting into a grapefruit with the rind on it and what it would taste like and also the texture. you can imagine that the rind would have a really strong bitter taste, be really chewy and might even overpower the flesh part of the fruit. now, make that grapefruit into a grape and is what it's like to eat a grape on shrooms. all of the sudden, the taste and texture of the
skin of a grape is so pronounced and strong and you can taste the skin in a way that you never had. all the subtleties (tartness, sweetness, saltiness) that usually blend in with the overall taste of the skin are no longer subtle. even if you eat the skin off a grape
right now, you won't taste it the way you would on shrooms. it's impossible.
-imagine that you've lived your entire life without ever having seen a blade of grass. you can literally stare at a blade of grass for 30 minutes and think about it -- what the hell is this? you start to think about how it grows, how it gains nutrients, how it feels, how it smells, the differences in texture are clearer to you (your mind will literally see the difference in textures, shades of color in one blade of grass in a way it wouldn't if you were sober). the beauty in one blade of grass and it's connection with the planet can actually bring tears to your eyes. (hey! no hippy jokes - dammit).
when you do shrooms for the first time, you'll feel as if you've never seen or thought about nature. so, you can only imagine what it's like to see flowers, fruit or animals. flowers will blow your mind!!! lol. (people are pretty funny to look at too...)
-imagine that you can look at sand on the beach and see individual grains w/o any effort. you can see the different shapes and sizes and colors so clearly that it's as if they are the size of big rocks. they don't actually look bigger, it's just that you can see everything so much clearer that they might as well be huge. and, this visual stimulus will lead you on the same path as the blade of grass -- you can literally think about sand for hours. why would you want to do this? why wouldn't you - it's beautiful.
-imagine anything that seems incomprehensible, like the creation of the universe OR the meaning of life. on shrooms, you can think through these things based on everything you know and there isn't a point when your mind stops thinking or feels overwhelmed. it just continues trying to figure things out and, this is gonna sound crazy, but you can figure it out to a certain extent. it's almost like there is nothing that you or mankind is incapable of understanding, lol. there are no limitations and it's effortless. (if you like philosophy then you have to do it. there's just no doubt that all those philosophers weren't also doing something! j/k haha...)
-oh, and, you'll laugh like you've never laughed before. all you have to do is think about something funny and you'll be laughing hysterically in seconds. and, most likely, everyone with you will also be dying laughing over it, too. :yelrotflmao: another reason it's the happy drug. weed doesn't even come close. oh, yeah, and of course...the fun part: things move and colors (sand on a beach moves like waves in water, marble tile looks like it's melting and swirling, carpet also looks like waves). oh, and you hear random stuff too...your sense of hearing is also heightened. you become more in touch with yourself than is possible w/o the drug. it's as if you are inside a shell of of yourself and watching yourself at the same time.
i totally understand your concerns. i was nervous the first time i did them too. and, it's true, you can have a bad trip so if you end up doing it make sure that you aren't going through any trauma or really stressful events in your life. i've had one bad trip and it wasn't fun. in fact, almost everyone i know has had a bad trip at some point in time and they are really, really scary. basically, it's just has be all good when do mushrooms. my favorite way to do it is lying on the grass in a park or at the beach or on top of a hill somewhere with other positive people who have done it before.
and, i realize this might be touchy for some people as mushrooms are illegal in the US and a drug. of course, this is something to think about and also the consequences of potentially having a bad trip or getting caught by the po po, both of which are baaaaad. (but, at least you can go to amsterdam!) also, i'm sorry if i'm making anyone uncomfortable. i just feel that it's better to talk about things openly and honestly.