Preggo vids may not all be created equal, but it can be safely said they're usually far from blistering.  This one may prove to be the exception, at least in part.  Populated by three distinct ethnicities - white, Hispanic and black - the vid has diversity on its side.

The participants all seem to be into the theme, which is also a plus in a genre where most guys appear to be fantasizing about the latest Hustler spread instead of the spreading mamma-nympho beneath them.  Extra points go to the Hispanic gal, whose lush, dark nipples look like tempting chocolate chip cookies.