A big butt is associated with big hips which is associated with child bearing capabilities. Everything sexual is associated with procreating and making babies. That's psychological and ingrained in every man's DNA. So a nice big ass and t*ts are liked by all men. If you say otherwise you're likely a fakkit.
The fat fake humongous butts are definitely a cultural preference. The trend did start in the 90s. For any brother that grew up in the 70s or 80s, they know that back then beauty standards was way different. A nice athletic black woman with a pretty face was preferred. White men were the same, except they leaned towards liking those huge fake t*ts and blond bimbos. Big fake butt's are also a thing in the south american community both white and black latinos prefer that.