Boulder Build-Up is when someone (usually over weight men and women) have dirt and sweat build up under or between cracks
in there body from limited exersise
and movement. Normally occurs under your arms, between your legs, under your flab
(fat) or in more sever cases just in open areas. This dirt build up sometimes
falls out in large chunks often
named Boulder Build-Up.
Bob: "Oh gee i really need to go to the toilet"
Bob: (mind) ill just
lif up my fat and do my buisness.
Bob: "OMG, what is that stuff"
Bob: "I think