When the titty is perky and firm, but maybe too firm. Its firmness adds a weight you wouldn't expect from a titty of the size. As if the titty is being weighted down by all the shit that bitch is hiding from you. Or it's breast cancer, 50/50 chance.

A Women who's breasts are very hard and full, the fatty tissue in the breast is more compacted, thus causing the breast to be volumous and firm.

Thick boobities

Like bags of sand. Often mistaken for implants, even on close inspection. The bane of mamographers everywhere.

It is where your breast is dense.

Simply a Breast that is indeed Dense

Big, Perky and hard