To invest your money in a women's breasts by paying for their inlargment. Usually in hope of gettingsomething in return.
Guy 1: I just payed to inlarge my wife's boobs, now im practicly broke.
Guy 2: Really? How much did you increase them?
Guy 1: Size B to D
Guy 2: Wow thats a big inbreastment.
Guy 1: Ya but im gona get laid like theres no tommorow.
Watson: "Look at the rack on her Holmes"
Sherlock: "Hmm, this may require further inbreastigation"
Watson: "Excellent Holmes"
Sherlock: "Elementary my dear Watson"
Guy:"You know, at first glance it looked like Sarah had huge tits. After further inbreastigation, I realized that they were fairly average in size. In any case, I will inbreastigate further and present you my research.