It is how sexually repressed people pronounce breasts. If anybody remembers the skit on mad tv, or was it saturday nigh tlive with the black guy in it portraying a ex con or something, everytime the character had to say breasts, he began stuttering and pronouncing it breast-ess-es.
word used by men who cannot correctly enunciate plural nouns that end with the letter S.
Dude, that fox has some nice breasts but why you got to add all those unnecessary syllables? Breasts is only one syllable...breasteses = breast-e-ses...count 'em!