So basically, would I date a guy who purposely makes his ass look big? HELL YEZ. But seriously, no. That'd just be weird.
Lol! A big butt isn't a "feminine" trait. Plenty of guys have a big butt just the same, so I can't understand why people consider it sexy for a woman. I've heard that butt implants start to sag overtime and unlike breast implants, are very difficult to "lift".