But it seemed to fit in the sentence with the rest of the slang.
I'm guessing "prolly" equates to "probably"?
Yep... you guessed it.
It comes down to common vernacular. "Pic" and "gators" are common vernacular; "shottie" is not (yet).
Aw...don't know about that either? Been hearin the word "shottie" off-n-on for pert near 45yrs. now. Actually long before seein or hearin "Pic."
Been hearin 'gator' since I was knee high to a butterfly.