A nipple orgasm is possible through stimulation. There are many techniques and toys you can use on your nipples to have an orgasm. When played with, nipples can set off fireworks throughout your body. With enough stimulation, you can even reach that big O. Arousal is the feeling of being turned on sexually. When you're turned on, your body experiences physical and emotional changes. Your penis or clitoris may get erect (hard), engorged, and sensitive, and you may feel wetness on your vulva or vagina,