And now, folks, here's what happens when you take both pills!

TAKES BOTH THE PILLS; HE ENCOUNTERS AN INTERNAL PARADOX THAT LEADS TO TWO BAD LUCK BRIANS EXISTING IN A THEORETICAL UNIVERSE, CAUSING HIM TO CEASE TO EXIST BECAUSE THE SIMULTANEOUS EXISTENCE OF THE TWO BAD LUCK BRIANS CAUSE EACH OTHER'S EXISTENCE TO CANCEL OUT THE OTHER, ALONG WITH THE ORIGINAL, WHO WENT ON A PATH OF INERT EXISTENCE, TECHNICALLY SPEAKING