That would be an absolute nightmare for me. I can’t stand cannabis and I doubt an elevated heart rate would make the experience any better.

Of all stimulants, caffeine must be the worst one to combine with THC. Proper stimulants like amphetamine or methylphenidate on the other hand... A word of warning though, it's much more dangerous and my normal Wednesday (1/8oz weed and 40mg mph) can be your psychosis.

Yes I agree, I once drank a load of coffee and did some THC gummies and it caused very unpleasant hallucinations and voices in my head. Also I couldn't fall asleep to make it go away :V

Speedball is a downer plus an upper, you named two uppers..