Sam likes things shoved up his butt. big things. Big rubber things; preferably when strapped on to the likes of this female trio who themselves are backdoor plumbing aficionados.
So, while 90% of your clientele might find Sam's practice just a tad more daunting than doing a blindfolded cha-cha in a minefield, those who crave such fare will be rewarded for Sam's trouble.
(Mainstream customers may enjoy Sam's internal pop shots, which leak out the ladies' various orifices like runny cheese.)