Southern Georgia Clam Bottom
When getting ready to perform anal sex on your partner, you insert a "Tampax Pearl" partly into your partners ass. You then insert the rest of the "Tampax Pearl" into their ass using your stiffened member, and await the "cumming" of the pearl.
"Dude, last night I gave my girl a Southern Georgia Clam Bottom using her last Tampax Pearl, she was so pissed!"