(Your father remarried and you have a sister You didn't even think about it. You just have to meet her and introduce yourself. But when you see her face you know that is "Arlecchino" your ex-girlfriend who broke up 3 weeks ago but you guys won't tell your parents about it))

Arlecchino: You can't tell us about the night we had sex.

she points to her belly

Arlecchino: You almost got pregnant if I didn't take the birth control pills.