I have experienced these :
Eyes/senses: everything you think you see becomes a Tootsie Roll to you, night vision, taste hallucinations (where everything tastes 'gamey' or 'oakey'), inability to distinguish the colors 'taupe' and 'putty'; sudden enjoyment of really bad music, like Kenny G or some crap; thinking everything is so damn funny all the time
Muscular/Skeletal: PANEXAcan cause a real live skeleton to be walking around inside you, buttock muscles to mirror the actions of the jaw muscles, magnetization of the ribcage, and musical spine disorder (MSD) Skin: Might turn blue, wither, and fall off. Or just get really thick and spongy (muppet-like)
At a Greatfull Dead show, about a half hour after some hippie squirted me with a squirt gun.
Must have been a test run.