Complex sentence: At the end, Segal's writer character first throws his typewriter down an embankment, saying that the words he's used as a writer made him sick, then he throws her "over:" Four-letter words make me even sicker !
Split into simpler sentences: At the end, Segal's writer character throws his typewriter down an embankment, saying that the words he's used as a writer made him sick. Then he throws her "over, saying" Four-letter words make me even sicker!