Certainly. It sounds like the exact sort of thing Gygax would have decided when a player innocently asked "what happens if...". It did prevent layer upon layer of extra-dimensional spaces from getting out of hand though.lukelightning said:The whole "bag of holding dimensional explosion thing" always sounded suspiciously like ad hoc DM meddling to me.
The Potion Miscibility tables have been updated by WotC for 3.5.I imagine there are still a few DMs who still believe that if you drink two potions you might explode.