Kat: Dad, you realize we know where babies come from, right?
Walter: Do you realize where they come out? Trust me. Not pretty.
Kat and Bianca: Dad!
Walter: Do you realize where they come out? Trust me. Not pretty.
Kat and Bianca: Dad!
Kat : Dad, you realize we know where babies come from, right?
Walter : Do you realize where they come out? Trust me. Not pretty.
Kat and Bianca : Dad!
http://www.tv-quotes.com/shows/10-things-i-hate-about-you/quote_22911.html