That's awesome! When I'm running sessions, the single most enjoyable thing for me are having anyone roll Natural 1's or 20's. I once had a party that was beginning to squabble amongst themselves; to try to show his stuff, a low level mage cast a "expell gas" cantrip at the largest fighter in the group. He rolled a nat 20. The fighter asked to roll a save; I allowed, and he rolled a nat 1. He spent the rest of that evening expelling gas at the best opportune time (for me, as the storyteller).