I think you will eventually get a little trip from non-5HT2A receptor activation, that will be pretty uneventful and kinda cheap. Things like swirling colours deep behind closed eyes, maybe some profound staring at objects, subject-object distinction breakdown, no mood change or euphoria and it'll all be over in an hour or so. I ate about 15 reasonably sized mushrooms and had this effect. I had previously eaten about 8 with the same effects. It seems it can't be overcome with massive doses, or at least it's not a linear relationship. Maybe ridiculous doses like 30 or so mushrooms would do something, or whatever the equivalent is in LSD.