The date, April 20 (4/20) holds some significance to many people, as well as being the anniversary of the Columbine High School massacre.
ðə dˈeɪt, ˈeɪpɹəl twˈɛnti fˈoːɹ slˈæʃ twˈɛnti hˈoʊldz sˌʌm sɪɡnˈɪfɪkəns tə mˈɛni pˈiːpəl, æz wˈɛl æz bˌiːɪŋ ðɪ ˌænɪvˈɜːsɚɹi ʌvðə kˈɑːləmbˌaɪn hˈaɪ skˈuːl mˈæsəkɚ.