we get so high that any underlying condition is masked by having a damn good time. ;)

I'm glad that works for you, but I've both tried playing D&D while high, and had some players who'd get high, and it was not particularly pleasant. In my experience, D&D requires more clarity of mind than marijuana tends to leave you with.

And I say this as someone who's going to start drinking less during D&D games, because I've noticed that after my third beer, my DMing is not as good as it is after my first beer.