Quote from Lilith in Lilith Needs a Favor
Lilith: I want to have another baby. Frasier: Well, you certainly don't need me for that. Surely... someone in Boston must have sperm. Lilith: I came to you first so that Frederick could have a full sibling. Frasier: So, just like that we're going to have another baby together. Lilith: No, no, no. Not just like that. I mapped out our dominant and recessive traits on a genome square, applied Mendel's laws, allowed for anomalies and concluded that you are the best biological choice. Frasier: I see. Well, as enticed as I am by your honeyed words, I'm gonna need some kissin'.