porn tube

Etymology
From. Probably originates from the tendency of early pornographic video-sharing websites to model their names after, such as (launched 12 March 2006),  (25 April 2007) and  (2007).

Noun

 * 1)  A pornographic video-sharing (or hosting) website.

Usage notes

 * Used chiefly in advertising spam or website descriptions as a keyword for search engine optimization.