Proving they're totally prepared for parenthood ... Snooki and her alleged baby daddy Jionni LaValle have successfully managed to go 4 whole days without misplacing or damaging their plastic infant training doll.
The pregnant "Jersey Shore" star has been carrying around the fake child since last week ... in what seems like a crash prep course on how to care for an actual living, breathing child.
No word on when the baby is due ... but all signs point to late August/early September ... right around the time "Jersey Shore" Season 6 is expected to debut.