[microme125]

To Daichi: Unfortunatly The book of erotic fantasy, book of unlawful carnal knowledge, and nymphology:blue magic do not contain anything in regards to inflation since they are all aimed towards introducing sex and not any specific fetish, though they do bring up some well known ones.
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while most races would view cart bound chests to be something to avoid, the races that can be found in the DND BE group, all have a different mindset which sees insanely large boobs as a good thing; the bigger the better. In-fact they all (except one alien race of future based games) worship a deity that promotes luck, fertility, and breasts; She even rewards those who worship her sufficiently with bigger breasts. For the caster classes (bustmancer, milk maiden, wildbust) [milk=power, bigger breasts=more milk, more milk=more power] is what it boils down to, so in their mind being cart bound is ok. On top of that are the numerous spells, feats, and abilities that reduces the effective "Breast Weight", helps them get around, and even enables them to do some fun things with their boobs in gameplay. Plus all of the races are built to live with giant breasts. Only 3 of the playable races in the group can go above 100 pounds from lvl1 with out feats or traits.
Its all sort of tongue and cheek,and that's part of the fun.
Here is a list of the playable races, the dice roll that determines their busts combined max weight without feats or traits. This is all in pounds btw.
Note: I think i read somewhere that an 34DD cup is about 3 to 3.5 pounds. I could be wrong.

*Mammokin 5d3+5=30
*Mammokin elf 5d10-5=45
*Mammomans 5d3=25 (half human,half mammokin)
*Half Omegamamkin 5d10+50=100
*Bloatkins10d10+40 /+10d10+40 deadweight=280
*Mammolings 1d4+4=20 (think halflings)
*Mammozon 2d12+3=27
*Uddella 14 to 50

Callian (this is made of the following offshoots)
*standard 4d6+2=26
*explorer 4d10+40=80
*nurse 10d6+90=150
*vanguard 4d6+2=26