My boyfriend and I are fully experiencing the joys of anal exploration and loving it every step of the way. He is convinced that you can cum through your bum. I know that penetration there can for sure lead to a vaginal orgasm, but is he right? If your bum can squirt and get slippery on its own, why would we need lube?
–Bum Bum Cum Cum?
Your boyfriend is correct, many women can experience orgasm through anal penetration, either alone or with clitoral stimulation, vaginal stimulation, or both. There is not necessarily a clear distinction between a vaginal orgasm and a butt orgasm, since when you come, both your pussy and your ass have contractions. However, your ass cannot ejaculate and it is not self-lubricating, so you absolutely need lube to make penetration comfortable.