junisia was an eelworm demoness , an eelworm demiurge , being dominated by her own sexual organs , her ballooning womb growing as rapidly as plague , as large as a rotunda or basilica , and then as massive as an amphitheater or a colosseum , before finally reaching a size large enough to accommodate the birthing mass of the leviathan mutant the tantradox had programmed into its own genes .