This episode is named after the I Love Lucy episode "Lucy is Enceinte" (premiered in December of 1952) in which Lucy finds out she's pregnant. The word "pregnant" was deemed inappropriate for television in the '50's, hence the Spanish word used in title. See more
You're pregnant with our baby? How could this even happen?
Simple. I took your DNA and inserted it into my temporary uterus through my fertilization device.
Oh, my God, you're serious! People are gonna think I had sex with a male baby and then got him pregnant!
Oh, thank you for finding a way to make it sound horrible.