A sexual maneuver wherein one is having sex with a female vaginally and doggy-style, and one inserts both thumbs (or two or more other suitable digits) into her anus and crooks them on the inside so as to create a solid lock. This creates the possibility of pulling the girl onto you more forcefully and with greater sensation. To say the least.
"Boarding parties away! Launch the grappling hook and bring her alongside for us to plunder!"
, only more so. A more retard.
I'm sorry Jimmy, you're only mildly autistic. Bobby has Downs' syndrome, and we at Hooters have a strict policy of seating customers in order of their mental impairment. See, the sign says "Motards will be served before Retards." Sorry, Jimmy. Stop drooling, Bobby.
A sexual maneuver involving the simultaneous insertion of a man's penis into a woman's vagina and his testicles into her anus. Once this is accomplished, there is nothing left to the maneuver but for the man to remove himself from both orifices whilst exclaiming "Boo-yah!"
Oh yeah, I boo-yah'd that Sandy chick. She knew enough to ask for it by name, too.