how does a bostonian accent sound like

u drop the 'r' sound in words like: hard(hahd), car(cah), && theater(theatah)... like when u met someone out of state that notices ur accent they tell u to say "park the car in harvard yard" thts accociated wit boston people n their accents... in it...cuz they're so "r's"...gett itt?! trust me im from eastie<3