[By conditioning, living things can react with a conditioned reflex. See "Pavlov's Dog Experiment"] Even though I love my girlfriend, I can't ejaculate during sex. Every time she says "I love you," my private parts tingle strangely. When she repeats "I love you," I realize I've ejaculated... When her sister finds out about my strange constitution, we begin days of experimental training related to "love" and "ejaculation." Am I the same as that dog, ejaculating reflexively just because she "loves me"?