standing for "
triangle tits", a name given to a female possesing
extremely large nipples,
generally a breast to nipple ratio equal to or exceeding 2:1.
ie. nipple diameter is greater than or equal to half breast diameter
formula for double T's: nipple©ª ¡Ã breast©ª/2
easily found when wet or damp, white/faded/see-through swimming costumes or shirts are worn on German swimming teachers.