How to tell my parents that i missed my college today?

my classes started from last 3 days and i decided to attend today...by that time my friends planned to watch movie and they asked me to come....i finished my improvement exams a week ago so i went to movie with them...definitly my college staff call my parents and enquire about my absense today....i said nothing to my parents about the first day of my college as i went to movie....so i'm scared to tell my dad....plz help....thanks in advance...