It depends on the woman. According to research in The Journal of Sexual Medicine, one-third of women who frequently have vaginal orgasms claim they’re more likely to get off when the man is well endowed. But here’s the thing: Plenty of women cannot climax through penetrative sex alone. That means you should focus less on how big your package is, and more on your overall performance. Women want a lover who is interested in exploring her body—someone who wants to learn exactly how to suck, kiss, lick, tug, scratch, and rub her the way she likes. So quit worrying about what’s hanging between your thighs, and focus on having fun.