v. The act of surprising someone in a populated venue below a table by 69-ing them.
Girl: We had just gotten our main course when he said, "Excuse me, I dropped my napkin...", went under the table to get it, and before I knew it he UTTIPS69'd me!
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