Females of the species, usually young and attractive, wearing swimming attire or less common undergarments designed with a narrow band of fabric extending across the pelvic arch and thence between the buttocks thereby connecting the frontal and dorsal parts of the garment.
He's such an unambitious pervert he gets off looking at the thong birds in Victoria's Secret or the Sports Illustrated swimsuit edition.
by Richmond RichardHof March 2, 2009
Get the thong birdsmug.