I'll bite

Today's CP has this curious item by Josh Eiserike:

Japanese artist Hokusai probably never imagined that his work would inspire tentacle porn. The Edo-period great master, who coined the term “manga,” created wood-block printings and drawings that are considered the forbearers of all things anime, from Sailor Moon to hentai and everything in between. In “Capricious Comics,” American cartoonist Colleen Doran will explain the connections between manga and anime, and how both relate to American comics, in conjunction with the current exhibit of Hokusai’s work. Though Doran’s résumé includes Captain America, Wonder Woman, and fantasy series A Distant Soil, she doesn’t enjoy the accolades in America that Japan showers on contemporary manga artists—in Japan, everyone reads comics, not just maturity-delayed men. In addition to a discussion of the Hokusai exhibit, Doran offers a showcase of her own work at 1 p.m. (see City List for other dates) at the Sackler Gallery, 1050 Independence Ave. SW. Free. (202) 633-4880.

OK... I'll bite: what is "tentacle porn?"