Abbreviated : TTB-Index. Refers to the number of texts it takes to achieve the much longed for intercourse with a woman. Take the number of texts, divide by the number of times you had intercourse and that yields the TTB-Index. A score between 1 and 10 usually points to an open-minded woman (read: slut) while any score about 100 can be safely considered a prude. Inbetween is just average.
- Tom, have you seen the new girl in Eco 101?
- Yah, she got some nice cans, wonder if she gives head..
- Well I think so, heard her text-to-bang index is way below 30!
by GDaSL December 01, 2011

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