Over at Fashionably Geek, two scifi-esque tees caught my eye. First was this excellent and important PSA about hoverbords, which require a landmass in order to function properly. The other is about three-breasted women.

As faithful io9 readers (and even faithless ones) know, we have always been fans of the three-breasted. But even better than just contemplating the third breast is this tee, which celebrates how science can contribute to the rapid evolution of a third breast for every consenting adult.

Both shirts sell for under $20.

Hoverboard via Fashionably Geek and Three Breastie via same.