An accurate measuring scale on grading the female breasts from smallest to largest; from the smallest tats, to the largest tuts.
"Man, she got them mosquito bite tats. Initial level of Vowel tits."
"She's got and nice rounded, good handful tots. Intermediate level of Vowel tits"
"Those milk filled utters she got. Them tuts need to get on my face. End of the line level of Vowel tits."