Actress Jennifer Garner did some oversharing about her Boston-bred husband on Thursday’s episode of “The Ellen DeGeneres Show.” While promoting her new movie “Butter,” Garner told DeGeneres that she doesn’t plan to have any more kids with Ben Affleck, but you never know. “My husband is kind of a wonder sperm kind of guy.” Hmm. She also said that Affleck is great at having tea parties with their two daughters. “He can sit there and be almost asleep and they think they’re having an incredible game with him.”