Birthday Laughs

My mom called me today to wish me a Happy Birthday. Later, Andy and I are talking after dinner:

Andy: "Did you tell your mom 'thanks for popping me out'?
Becca: "Yep, in other terms of course."
Andy: "They should have a birthday person's mom's card."
Becca: "Mom used drugs to have me."
Andy: "She used fertilizer?"

I was referring to the epideral mom had. Andy was meaning to say fertility drugs.