Yeah, you're right, Buck has lips like that too, doesn't he?

I have begun to realize that all male sim lips are very similar, though. The game makes them extremely thin, no matter what. I made Mr. Doe's lips bigger to match my source material, and Jayne ended up with extremely large lips (to the point of having freakish lines in them at times - since it must push the limits of the game in some way).

I see that as a flaw in the way the game does genetics. I definitely have male relatives that have the exact same full lips that I do. Not all men have thin lips.