(Internal screaming)
Depends on how I'd see their personality. I don't and won't find any random pony sexually arousing. In fact I'm more likely to wonder what I've spent my day doing. Honestly, again, it's how I see them as a being that would define that. If anyone's familiar with one of Vitaly's videos called "Speaking Russian with strangers", at the end there was a girl that YouTube commentors fell for the second they saw her, but the way she reacted makes me think she's anything but "sexy".
Stalking Analysis of people has told me that beauty truly is in the eye of the beholder, therefore, I cannot really speak against people who find all ponies sexy. You don't really have a choice when it comes to what you like (you can't choose to like ice cream, for example), sure you can suppress it, but you know you do.
In short, yes.