Only once is birth control mentioned, and then only in passing as Leslie almost forgets to pack her birth-control pills for a trip.
ˈoʊnli wˈʌns ɪz bˈɜːθ kəntɹˈoʊl mˈɛnʃənd, ænd ðˈɛn ˈoʊnli ɪn pˈæsɪŋ æz lˈɛsli ˈɔːlmoʊst fɚɡˈɛts tə pˈæk hɜː bˈɜːθkəntɹˈoʊl pˈɪlz fɚɹə tɹˈɪp.