(short for boobs-to-maintenance ratio) is a commonly used metric for gold-diggers, pioneered by bitcoin millionaires and Hong Kong veterans.

Units: cup (A = 1, B = 2, etc...) per $1000 of monthly maintenance cost.

Anything with BTM ration of 4 or above is considered a good investment. The ultimate goal in life is to father children with women who have an infinite BTM ratio.
1. My Thai GF got a BTM ratio of 8, what a catch!

2. Hong Kong's average BTM ratio is 0.5, no wonder the country's falling apart!
by bal3r November 7, 2019
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