I'll throw out a few ideas if you're still interested
1. Tall Amazonian chicks demanding dicc
2. (Hung) White femboi and a black dude comparing size's
3. Some sort of mandatory breeding to prevent the extinction of redheads
4. A happy walrus and his pup
5. a futuristic humanity meeting aliens and the aliens want to research the differences between humans male/female white/black ECT.
6.two girls talking about their bfs and fighting over the stereotype of white guys being smaller so they need "research".
And finally
7. you mentioned wwo so if it's futuristic perhaps maps and population statistics (race and gender ratios, average size, relationship preferences ECT.)