To have anal sex with a woman who has never shaved her butthole. The point is to collect as much feces on your penis, like a bulldozer spitting up mud.
Last night me and my gf did a French bulldozer. Took me two hours to clean my dick and four for her to clean her bedroom.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi