No one said "weed gives me psychadelic/hallucenagenic experiences that are identical to LSD, mushies, PCP". All people were saying is that they "tripped". They have a different definition of the word (and as valid of one) as you.

Sometimes I say that I'm trippin, because to me, it's just a bigger high that makes me much less aware of what's going on, seeing a few colours change, and my eyes can't stay focused, so it appears that everything is jumping back and forth. I'm not saying that it's an equivilent trip that I'd get off of other drugs, but I'm still tripping.