robert charles kerman (december 16, 1947 – december 27, 2018) was an american actor. he appeared in pornographic movies in the 1970s and 1980s. kerman was born in new york city. his nickname was r. bolla. he was in 100 pornographic movies, but famously in "debbie does dallas" (1978). he also appeared in non-pornographic movies such as "the goodbye girl" (1977), "the concorde... airport '79", "cannibal holocaust" and "cannibal ferox".