Unfortunately for black men, studies have more or less established that there is no significant positive correlation between African lineage and dick size. Instead, dick size is mostly related to the size of the person. I am not up to date on academic literature related to butt size.
On another note, Durex company, a reputable research organization, conducted a global “sexual wellbeing” survey from 2007 to 2008, and found that Nigeria, the only African country included in the survey, reported the highest frequency of respondents who were “fully satisfied” with their sexual experiences. However, the results might have been biased by the testing methodology; Nigeria’s survey was conducted in person, compared to over the internet or telephone in other countries.
Perhaps of interest to certain AF participants: India finished third in the list. With such great results in contrast with certain recent public incidents, you really “don’t know who to thank”.